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New Hampshire 2007 Five Percent Report

This report is in response to the Federal requirement that each state describe at least 5 percent of its locations currently exhibiting the most severe highway safety needs, in accordance with Sections 148(c)(1)(D) and 148(g)(3)(A), of Title 23, United States Code. Each state's report is to include potential remedies to the hazardous locations identified; estimated costs of the remedies; and impediments to implementation of the remedies other than costs. The reports included on this web site represent a variety of methods utilized and various degrees of road coverage. Therefore, this report cannot be compared with the other reports included on this Web site.

Protection from Discovery and Admission into Evidence—Under 23 U.S.C. 148(g)(4) information collected or compiled for any purpose directly relating to this report shall not be subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action for damages arising from any occurrence at a location identified or addressed in the reports.

Additional information, including the specific legislative requirements, can be found in the guidance provided by the Federal Highway Administration,
http://safety.fhwa.dot.gov/safetealu/fiveguidance.htm.


Highway Safety Improvement Program

2007
Five Percent Report

NH Department of Transportation
Bureau of Highway Design

Introduction

Section 1401 of SAFETEA-LU amended Section 148 of Title 23 USC to transform the existing Highway Safety Improvement Program (HSIP) into a "core" FHWA program with separate funding, replacing the Hazard Elimination Program in 23 USC 152, effective October 1, 2005. The purpose of the HSIP as stated in Section 148(b)(2) is to reduce fatalities and serious injuries on public roads. As part of the new HSIP, states are required to do an analysis of their crash data and submit an annual report describing not less than five percent of their highway locations exhibiting the most severe safety needs [Section 148(c)(1)(D)].

The analysis must identify hazardous locations, roadway sections and elements and, "using such criteria as the State determines to be appropriate, establish the relative severity of those locations in terms of accidents, injuries, deaths, traffic volume levels, and other relevant data". The New Hampshire Department of Transportation (NHDOT) has analyzed the available crash data for 2002 to 2005 to determine the State's top five percent of locations exhibiting the most severe safety needs. This analysis was based solely on the crash record data available from the New Hampshire Department of Safety, and included fatalities and injury type accidents. The injury accidents included all injuries regardless of the severity.

The following explains the methodology used to identify hazardous locations, describes the locations identified, and provides potential remedies and their estimated costs and implementation impediments. Also included is supplemental information for each site.

The data used was based on information available from the NH Department of Safety. Estimates developed for each location utilized basic information and will need further review before any final selection is made of projects to be funded with HSIP monies. In addition, this data will require further screening to verify the data is indicating the appropriate location for selection of a segment/intersection for each functional class of roadway. This may result in a change in the identified crash location and/or type of remedy. As the NHDOT improves its process for collecting crash data, a more in depth analysis of the crash locations and solutions will be accomplished.

Methodology

In New Hampshire, crash reports are filed with the NH Department of Safety (NHDOS) by law enforcement agencies and are entered into the Accident Reporting System at NHDOS. The NHDOT reviewed the available crash data for all state and public roads in New Hampshire to identify the top five percent of the State's locations with the most severe safety needs. The analysis was based on crash rates developed from the 2002 to 2005 fatal and injury crash data from the Department of Safety. This analysis was done for roadway segments from each functional classification of the State's roadway system, which included the interstate system, arterials (major and minor), and collectors (major and minor). Roads classified as "local" roads were not included in the roadway segments as the NHDOT does not have traffic volume data for local roads needed to determine crash rates. The crash rates for the roadway segments were based on the number of fatal and injury crashes per million vehicle miles traveled (MVMT) for the most recent four (4) years of data (2002-2005). The NHDOT nodal system was used to determine the crash segment locations. Only roadway segments longer than 0.3 miles were evaluated in order to reduce the potential for anomalies in the data that might be related to intersection type crashes.

The NHDOT also analyzed intersection crash data for each functional classification of the State's roadway system, which included interstates, arterials (major and minor), collectors (major and minor) and local roads. The crash data used was based solely on the total number of fatal and injury crashes at each of the intersections, as the NHDOT does not have complete traffic volume data for some intersections (which was needed for determining the crash rate).

For each functional classification of roadway stated above, the NHDOT identified twenty (20) of the segments with the highest fatal and injury crash rates, and twenty (20) of the intersections with the highest number of total fatal and injury crashes. The five percent of each of these roadway segments and intersections that data showed as having the highest crash rate (or total crashes) was selected for further evaluation. As noted above, each roadway segment identified was evaluated using crash rates consisting of the total number of fatal and injury accidents/ MVMT. The crash rate for each segment selected was compared to the statewide average crash rate for each of their respective functional classification. Analysis for each intersection relied solely on the total number of crashes and was not further evaluated using another method, as the data needed was limited.

Once the roadway segments and intersections indicated as having the most severe safety needs were identified for each functional class, a safety review was performed for each segment and intersection to identify the problem(s) and identify potential remedies. The potential remedies and rough cost estimates are based on the NHDOT's preliminary reviews and statewide average costs. A further detailed improvement study and cost estimate will need to be performed for each location during the formal project development process, which may result in a change to the details and costs of potential remedies.

The FHWA guidance for the Five Percent Report also requires that impediments to implementation of the remedies other than costs be identified. Each segment and intersection evaluated for improvements was also reviewed to determine potential impediments to such improvements.

Extent of Public Road Coverage

As noted above, for roadway segments, the NHDOT has the number of fatal and injury crashes on all State and local roads. However, the NHDOT does not have traffic volume information for local roads, which is needed to develop crash rates for local road segments. For intersections, the number of fatal and injury crashes is available for all State and local roads, but the NHDOT does not have complete traffic volume information for some intersections. It was decided to use the total number of accidents for the intersection analysis in the Five Percent Report, and not a "crash rate", as there was no way to develop a rate without having the traffic volumes.

Schedule of Upgrading Crash and Roadway Data Systems

The NHDOT is currently working on the Strategic Highway Safety Plan (SHSP), which includes an emphasis area for improving data. It is anticipated that the SHSP will identify strategies to improve the data, such that the extent of coverage for all public roads and the elements needed for the crash analysis, can readily be made available. The SHSP strategies for improving data have been identified and these strategies will begin to be implemented over the next 12 months.

In addition, the NHDOT is already engaged in an effort with the University of New Hampshire to improve the timeliness and accuracy of crash reporting. The project is being linked to an existing police vehicle project known as "Project 54", which uses an in-vehicle computer system. This will allow officers to enter crash information into an electronic form at the time of the crash using the existing Project 54 voice activated computer system. The report is later electronically uploaded to a central database providing more accurate information in a quicker time frame. Software development for this initiative is under way and it is anticipated it will be instituted in the fall of 2008.

Improving traffic volume data will likely require the NHDOT to work with the Regional Planning Commissions and communities to collect traffic information, and make it available to the NHDOT. It is anticipated that the improvement in the collection of traffic volume data will occur over the next 12 months.

Years Used In Crash Data Analysis

As noted above, the most recent four years of crash data information available for this report is 2002 to 2005. It is anticipated that strategies coming from the SHSP's emphasis area on data will include different approaches to achieving timelier reporting of crash data.

Contact Information

Craig Green, PE
Administrator, Bureau of Highway Design
NH Dept. of Transportation
P.O. Box 483, 7 Hazen Drive
Concord, N.H. 03302-0483

Five Percent Report for Segments

Function Class/
Location
Potential Remedies Estimated costs Implementation Impediments Comments
Interstate
Franconia:
Interstate 93 Northbound
2800’ segment between Exit 35 and 36 off ramps
Improve lighting to illuminate area of known animal crossings
$10,000   Increased illumination could be controversial due to proximity of White Mountain National Forest Major crash type: overturning
-OR-
Enhance curve warning signs / chevrons
$5,000
Major Arterial Concord:US 3
2200’ segment between Airport Road and the Concord/Pembroke line.
Provide additional signing to alert drivers to outside through lane becoming a right turn lane $20,000 None Major crash type: collision with another vehicle
Minor Arterial
Manchester:
Mammoth Road
2300’ segment between Lucas Road and the Manchester/Londonderry line.
Widen clear zone by selective tree clearing
$5,000   Tree clearing could be controversial due to residential nature of road Major crash type: collision with another vehicle
-OR-
Install “stop ahead” signs at appropriate location(s)
$2,000
Major CollectorRichmond:
NH 32
2500’ segment between the NH/Mass state line and Tully Brook Road
Increase the clear zone by removing trees and widening the ditch
$100,000   This is a scenic New England roadway.  To increase the clear zone would likely result in community opposition and would likely require right-of-way acquisition Major crash type: collision with fixed object Estimates do not include right-of-way costs
-OR-
Improve sight distance by improving the roadway geometry
$150,000
Minor Collector Lempster:Allen Road
1.4 mile section between Lempster/Acworth town line and Lempster Street
Increase the clear zone $100,000 This is a scenic New England roadway.  To increase the clear zone would likely result in community opposition. Major crash type: collision with fixed object Recent work was completed to repair the pavement and improve slopes.

Five Percent Report for Intersections

Function Class/
Location
Potential Remedies Estimated costs Implementation Impediments Comments
Interstate Intersection Londonderry:
I-93 Northbound
Exit 5 Off Ramp
Selective tree clearing to improve visibility of exit sign
$5,000   None Major crash type: collision with another vehicle Interchange will be reconstructed by planned I‑93 expansion project
-OR-
Revise exit markings to make start of deceleration lane more distinct
$5,000
Major Arterial
Manchester:
Beech Street/Bridge Street
Improve signals with back plates, LED heads, and pedestrian hardware
$15,000   Intersection is not under the State’s jurisdiction Major crash type: collision with another vehicle
-OR-
Adjust signal timing to optimize operations and reduce conflicts
$1,000
Minor Arterial Manchester: Beech Street/Lake Avenue Improve signals with back plates, LED heads
$5,000   Intersection is not under the State’s jurisdiction Major crash type: collision with another vehicle
-OR-
Adjust signal timing to optimize operations and reduce conflicts
$1,000
Major Collector Manchester: Chestnut Street/Salmon Street Improve signing and lighting
$5,000   Intersection is not under the State’s jurisdiction Major crash type: collision with another vehicle
-OR-
Construct curb bumpouts
$20,000
Minor Collector Brentwood: NH 27 (South Side Road) / North Road Reduce speed limit and narrow road to calm NH 27 traffic
$10,000   None Major crash type: collision with another vehicle
-OR-
Construct roundabout
$500,000
Local Road Concord:D’Amante Drive/Loudon Road Improve signal timing to optimize operations and reduce red light running $1,000 Intersection is not under the State’s jurisdiction Major crash type: collision with another vehicle

HSIP June 2007

Interstate Highways

COUNTY TOWN STREET SECTION ID SECTION LENGTH FUNCT CLASS AADT AVG F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES CRASH RATE Avg Crashes per Year
GRAFTON FRANCONIA Styles Bridges Hwy (I0000093__) 16340 0.535 1 3105 0 0 0 0 0 2 0 4 6 2.4739 1.50
GRAFTON FRANCONIA Styles Bridges Hwy (I0000093__) 1392 0.308 1 4628 0 2 0 1 0 0 0 0 3 1.4415 0.75
GRAFTON FRANCONIA Styles Bridges Hwy (I0000093__) 56929 0.677 1 3105 0 2 0 0 0 1 0 0 3 0.9775 0.75
GRAFTON BETHLEHEM Styles Bridges Hwy (I0000093__) 16351 0.684 1 5016 0 1 0 1 0 2 0 0 4 0.7985 1.00
GRAFTON LITTLETON Styles Bridges Hwy (I0000093_S) 24191 0.598 1 2885 0 0 0 0 0 1 0 1 2 0.7940 0.50
GRAFTON ENFIELD Gen F Merrill Hwy (I0000089__) 90514 1.619 1 9925 0 1 0 6 0 6 0 5 18 0.7673 4.50
GRAFTON FRANCONIA Styles Bridges Hwy (I0000093__) 43877 1.820 1 4853 0 1 0 3 0 5 0 0 9 0.6979 2.25
GRAFTON ENFIELD Gen F Merrill Hwy (I0000089__) 90513 0.498 1 9925 0 1 1 2 0 1 0 0 5 0.6929 1.25
GRAFTON WOODSTOCK Styles Bridges Hwy (I0000093__) 47503 0.546 1 5718 0 0 0 2 0 0 0 1 3 0.6582 0.75
GRAFTON LITTLETON Styles Bridges Hwy (I0000093__) 23966 0.634 1 3513 0 0 0 1 0 0 0 1 2 0.6150 0.50
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293__) 16884 0.700 11 26506 0 0 0 3 0 1 0 12 16 0.5906 4.00
MERRIMACK CANTERBURY Styles Bridges Hwy (I0000093_S) 8421 0.288 1 16165 0 0 0 3 0 1 0 0 4 0.5885 1.00
GRAFTON PLYMOUTH Styles Bridges Hwy (I0000093__) 53869 0.471 11 10088 0 1 0 2 0 1 0 0 4 0.5766 1.00
GRAFTON LINCOLN Styles Bridges Hwy (I0000093__) 31812 1.133 1 4256 0 0 0 0 0 3 0 1 4 0.5682 1.00
GRAFTON CAMPTON Styles Bridges Hwy (I0000093__) 19113 1.812 1 8627 0 3 0 2 0 6 0 1 12 0.5258 3.00
ROCKINGHAM SALEM Alan B Shepard Hwy (I0000093__) 40455 0.690 11 43885 0 3 0 9 0 8 1 3 24 0.5429 6.00
SULLIVAN GRANTHAM Gen F Merrill Hwy (I0000089__) 58086 1.806 1 8025 0 2 0 2 0 5 0 2 11 0.5198 2.75
ROCKINGHAM PORTSMOUTH Blue Star Memorial (I0000095__) 24176 0.469 11 45261 0 2 0 5 0 6 0 3 16 0.5163 4.00
GRAFTON PLYMOUTH Styles Bridges Hwy (I0000093__) 51767 0.309 11 8627 0 1 0 1 0 0 0 0 2 0.5139 0.50
GRAFTON LITTLETON Styles Bridges Hwy (I0000093_S) 47681 0.762 1 3513 0 0 0 0 0 0 0 2 2 0.5117 0.50

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Major Arterial Highways

COUNTY TOWN STREET SECTION ID SECTION LENGTH FUNCT CLASS AADT AVG F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES CRASH RATE Avg Crashes per Year
MERRIMACK CONCORD Dw Highway (U0000003__) 32149 0.446 14 16590 0 0 0 13 0 18 0 13 44 4.0730 11.00
ROCKINGHAM EPPING Calef Rd South (S0000125__) 35997 0.335 2 13562 0 0 0 7 0 9 0 9 25 3.7689 6.25
COOS JEFFERSON Presidential Hwy (U0000002__) 30602 0.328 2 3497 0 0 0 3 0 0 0 3 6 3.5829 1.50
BELKNAP TILTON Laconia Rd (U0000003__) 32702 0.728 14 15663 0 1 0 12 0 25 0 16 54 3.2437 13.50
CARROLL OSSIPEE White Mt Hwy/Nh 16 (S0000016__) 53799 0.311 2 8488 0 0 0 6 0 4 0 2 12 3.1136 3.00
GRAFTON LEBANON River Rd (S0000012A_) 115810 0.651 14 3891 0 0 0 2 0 2 0 7 11 2.9744 2.75
HILLSBOROUGH MILFORD South Side Rd (S0000101__) 14245 0.595 2 15068 0 1 0 12 0 11 1 11 36 2.7503 9.00
ROCKINGHAM PORTSMOUTH Lafayette Rd (U0000001__) 55829 0.557 14 17507 0 0 0 11 0 13 0 11 35 2.4584 8.75
ROCKINGHAM PLAISTOW Danville Rd (S0000125__) 40695 0.390 14 25296 0 9 0 7 0 14 0 2 32 2.2217 8.00
COOS PINKHAMS GRANT White Mtn Hwy (S0000016__) 33375 0.546 2 3625 0 0 0 2 0 4 0 0 6 2.0763 1.50
COOS PINKHAMS GRANT White Mtn Hwy (S0000016__) 57112 0.410 2 3243 0 0 0 4 0 0 0 0 4 2.0605 1.00
ROCKINGHAM NORTH HAMPTON Lafayette Rd (U0000001__) 3547 0.318 14 17012 0 0 0 2 0 3 1 10 16 2.0257 4.00
BELKNAP GILFORD Lakeshore Rd (U0000003__) 43186 0.351 14 14546 0 4 0 6 0 3 0 2 15 2.0123 3.75
BELKNAP TILTON West Main St (U0000003__) 22757 1.045 14 14511 0 3 0 12 0 8 0 18 41 1.8519 10.25
GRAFTON LEBANON River Rd (S0000012A_) 12903 0.463 14 3891 0 0 0 1 0 0 0 3 4 1.5208 1.00
ROCKINGHAM WINDHAM Indian Rock Rd (S0000111__) 49160 0.878 14 15162 0 3 0 14 0 8 0 5 30 1.5435 7.50
MERRIMACK PEMBROKE Daniel Webster Hwy (U0000003__) 51199 0.432 14 10136 0 0 0 4 0 4 0 1 9 1.4078 2.25
CARROLL ALBANY White Mountain Hwy (S0000016__) 29831 0.383 2 7972 0 0 0 3 0 1 0 2 6 1.3460 1.50
GRAFTON LEBANON River Rd (S0000012A_) 115546 0.397 14 3891 0 2 0 0 0 1 0 0 3 1.3302 0.75
HILLSBOROUGH WILTON Gibbons Hwy (S0000101__) 17358 0.455 2 7966 0 0 0 1 0 4 0 2 7 1.3228 1.75

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Minor Arterial Highways

COUNTY TOWN STREET SECTION ID SECTION LENGTH FUNCT CLASS AADT AVG F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES CRASH RATE Avg Crashes per Year
HILLSBOROUGH MANCHESTER Mammoth Rd (S0000028A_) 7594 0.449 16 4271 0 0 0 8 0 7 0 5 20 7.1433 5.00
MERRIMACK CONCORD Hopkinton Rd (U0000202__) 38497 1.434 6 3710 0 0 0 19 0 14 0 7 40 5.1497 10.00
HILLSBOROUGH MANCHESTER Brown Av (S0000003A_) 17979 0.458 16 7610 0 2 0 9 0 5 0 10 26 5.1094 6.50
HILLSBOROUGH NASHUA D W Hwy So (L3150008__) 52837 0.387 16 21567 0 0 0 20 0 21 0 19 60 4.9238 15.00
HILLSBOROUGH MANCHESTER S Willow St (S0000028__) 622 0.541 16 12696 0 0 0 15 0 17 0 16 48 4.7866 12.00
GRAFTON RUMNEY Moosilauke Rd (S0000025__) 4667 0.318 6 2665 0 0 0 2 0 3 0 0 5 4.0410 1.25
STRAFFORD ROCHESTER Salmon Falls Rd (L3890053__) 46170 0.363 16 3338 0 0 0 0 1 3 0 2 6 3.3916 1.50
HILLSBOROUGH MANCHESTER S Willow St (S0000028__) 68191 0.340 16 27130 0 0 0 24 0 16 0 1 41 3.0444 10.25
SULLIVAN NEWPORT Central Rd (S0000011__) 29872 0.521 6 9433 0 0 0 9 0 4 0 6 19 2.6480 4.75
ROCKINGHAM DERRY Londonderry Tpk (S0000028__) 48387 0.434 16 12289 0 0 0 4 0 8 0 7 19 2.4400 4.75
COOS WHITEFIELD Twin Mountain Rd (U0000003__) 58893 0.649 6 2636 0 0 0 2 0 1 0 3 6 2.4022 1.50
ROCKINGHAM HAMPTON Ocean Blvd (S0000001A_) 4420 0.442 16 10190 0 1 0 5 1 5 0 3 15 2.2811 3.75
SULLIVAN CLAREMONT Central Rd (S0000012__) 19572 0.529 6 9133 0 0 1 8 0 4 0 3 16 2.2683 4.00
MERRIMACK DANBURY NH 104 (S0000104__) 43055 0.358 6 2670 0 0 0 0 0 3 0 0 3 2.1497 0.75
ROCKINGHAM EXETER NH College (S0000108__) 44168 0.408 16 6624 0 0 0 2 0 4 0 2 8 2.0275 2.00
HILLSBOROUGH NASHUA Main Dunstable Rd (S0000111A_) 31141 0.329 16 4176 0 0 0 0 0 3 0 1 4 1.9941 1.00
HILLSBOROUGH HUDSON Belknap Rd (L2290293__) 8170 0.289 16 4976 0 1 0 1 0 2 0 0 4 1.9051 1.00
ROCKINGHAM PLAISTOW Main St (S0000121A_) 10113 0.336 16 5576 0 0 0 3 0 1 0 1 5 1.8279 1.25
MERRIMACK DANBURY US 4 (U0000004__) 50569 0.458 6 1650 0 0 0 0 0 1 1 0 2 1.8127 0.50
GRAFTON RUMNEY Moosilauke Rd (S0000025__) 9847 0.563 6 4700 0 0 0 1 0 1 0 5 7 1.8119 1.75

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Major Collector Highways

COUNTY TOWN STREET SECTION ID SECTION LENGTH FUNCT CLASS AADT AVG F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES CRASH RATE Avg Crashes per Year
CHESHIRE RICHMOND NH 32 (S0000032__) 51448 0.540 7 419 0 0 0 2 0 1 0 1 4 12.1088 1.00
STRAFFORD ROCHESTER Central Av (S0000202A_) 7170 0.492 7 1966 0 4 0 0 0 0 0 4 8 5.6649 2.00
SULLIVAN NEWPORT Dart College Hwy (S0000010__) 17287 0.494 7 3275 0 2 0 4 0 4 0 3 13 5.5037 3.25
CARROLL ALBANY Kancamagus Hwy (S0000112__) 58822 0.467 7 1248 0 0 0 1 0 3 0 0 4 4.7008 1.00
SULLIVAN CHARLESTOWN NH 12A (S0000012A_) 61276 0.357 7 1372 0 1 0 1 0 1 0 0 3 4.1951 0.75
CHESHIRE ALSTEAD Alstead Center Rd (S0000012A_) 60908 0.396 7 1325 0 0 0 2 0 0 0 1 3 3.9161 0.75
HILLSBOROUGH MERRIMACK Baboosic Lake Rd (L2970050__) 47238 0.432 17 1832 0 0 0 2 0 0 0 2 4 3.4618 1.00
CHESHIRE JAFFREY Mountain Rd (S0000124__) 62278 0.432 7 1887 0 0 0 2 0 2 0 0 4 3.3609 1.00
ROCKINGHAM RAYMOND Old Southside Rd (S0000027__) 28222 0.375 17 3429 0 0 0 3 0 1 0 2 6 3.1959 1.50
CHESHIRE FITZWILLIAM NH 119 W (S0000119__) 61969 1.238 7 1464 0 1 0 2 0 3 0 2 8 3.0233 2.00
CHESHIRE RICHMOND NH 32 (S0000032__) 57151 1.092 7 419 0 0 0 1 0 1 0 0 2 2.9939 0.50
STRAFFORD DOVER Sixth St (L1250050__) 30791 0.498 7 2766 0 0 0 4 0 1 0 1 6 2.9834 1.50
ROCKINGHAM DEERFIELD Mt View Rd (S0000043__) 66438 0.395 7 2372 0 0 0 0 0 4 0 0 4 2.9241 1.00
GRAFTON WARREN NH 118 (S0000118__) 59534 0.287 7 826 0 1 0 0 0 0 0 0 1 2.8893 0.25
HILLSBOROUGH FRANCESTOWN Greenfield Rd (S0000136__) 52880 0.349 7 1362 0 1 0 0 0 1 0 0 2 2.8819 0.50
CARROLL WAKEFIELD Wakefield Rd (N4590041__) 54929 0.410 7 2343 0 0 0 2 0 1 0 1 4 2.8520 1.00
BELKNAP CENTER HARBOR Winona Rd (N2950045__) 54315 0.819 7 883 0 0 0 2 0 1 0 0 3 2.8413 0.75
HILLSBOROUGH SHARON NH 123 (S0000123__) 36779 0.470 7 1563 0 0 0 1 0 1 0 1 3 2.7971 0.75
MERRIMACK ANDOVER Mascoma Valley Rd (U0000004__) 45688 0.587 7 2186 0 0 0 2 1 0 0 2 5 2.6689 1.25
ROCKINGHAM NEWMARKET Lee Rd (S0000152__) 40582 0.291 7 1767 0 0 0 1 0 1 0 0 2 2.6641 0.50

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Minor Collector Highways

COUNTY TOWN STREET SECTION ID SECTION LENGTH FUNCT CLASS AADT AVG F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES CRASH RATE Avg Crashes per Year
SULLIVAN LEMPSTER Allen Rd (L2570074__) 40316 1.380 8 102 0 0 0 2 0 1 0 0 3 14.5979 0.75
GRAFTON HANOVER Goose Pd Rd (L2030063__) 43259 0.721 8 96 0 0 0 0 0 0 0 1 1 9.8956 0.25
CARROLL SANDWICH Holderness Rd (S0000113__) 42511 0.670 8 448 0 1 0 3 0 0 0 0 4 9.1276 1.00
COOS RANDOLPH Pinkham B Rd (N2910040__) 26479 1.128 8 81 0 0 0 1 0 0 0 0 1 7.4964 0.25
GRAFTON FRANCONIA Butter Hill (S0000141__) 17041 1.438 8 142 0 1 0 1 0 0 0 0 2 6.7086 0.50
BELKNAP NEW HAMPTON Main St (S0000132__) 37842 0.483 8 730 0 0 0 2 0 0 0 1 3 5.8277 0.75
GRAFTON LANDAFF Brook Rd (N2610042__) 35799 0.986 8 140 0 0 0 0 0 1 0 0 1 4.9618 0.25
CARROLL MADISON East Madison Rd (L2830052__) 6853 0.349 8 790 0 0 0 1 0 1 0 0 2 4.9685 0.50
SULLIVAN ACWORTH Alstead  Rd (S0000123A_) 60968 0.486 8 712 0 0 0 0 0 2 0 0 2 3.9588 0.50
GRAFTON LYME Goose Pond Rd (L2770052__) 9082 0.436 8 1040 0 2 0 0 0 0 0 0 2 3.0210 0.50
CARROLL TUFTONBORO Mountain Rd (S0000171__) 52219 0.492 8 925 0 0 0 1 0 0 0 1 2 3.0100 0.50
GRAFTON FRANCONIA NH 18 (S0000018__) 43246 1.350 8 344 0 0 1 1 0 0 0 0 2 2.9497 0.50
GRAFTON CAMPTON NH 175 (S0000175__) 8823 0.582 8 1222 0 1 0 1 0 0 0 1 3 2.8892 0.75
SULLIVAN WASHINGTON East Washington Rd (L4670065__) 16429 0.665 8 373 0 0 0 0 0 1 0 0 1 2.7613 0.25
MERRIMACK WEBSTER White Plains Rd (L4730050__) 2636 1.144 8 446 0 0 0 1 0 0 0 1 2 2.6848 0.50
MERRIMACK WARNER Schoodac Rd (L4630051__) 48720 0.580 8 446 0 1 0 0 0 0 0 0 1 2.6478 0.25
HILLSBOROUGH BENNINGTON Bennington Rd (S0000047__) 30514 0.450 8 1171 0 0 0 0 0 2 0 0 2 2.5996 0.50
CARROLL OSSIPEE Browns Ridge Rd (N3570040__) 50666 1.409 8 188 0 0 0 0 0 1 0 0 1 2.5857 0.25
ROCKINGHAM HAMPTON Exeter-Hampton Rd (S0000027__) 17718 0.478 8 3367 0 0 0 3 0 1 0 2 6 2.5535 1.50
HILLSBOROUGH MASON Valley Rd (S0000123__) 56187 0.632 8 437 0 0 0 1 0 0 0 0 1 2.4800 0.25

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Interstate Intersections

COUNTY TOWN STREET SECTION ID FUNCT CLASS F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES Avg Crashes per Year
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293__) 285:0312 11 0 2 0 1 0 1 0 3 7 1.75
ROCKINGHAM LONDONDERRY Interstate 93 (I0000093__) 269:0804 11 0 1 0 2 0 1 0 2 6 1.50
ROCKINGHAM LONDONDERRY Interstate 93 (I0000093_S) 269:0426 11 0 2 0 1 0 3 0 0 6 1.50
ROCKINGHAM PORTSMOUTH Blue Star Memorial (I0000095__) 379:0251 11 0 1 0 2 0 3 0 0 6 1.50
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293__) 285:0262 11 0 0 0 3 0 2 0 0 5 1.25
ROCKINGHAM WINDHAM Alan B Shepard Hwy (I0000093_S) 489:0364 11 0 0 0 3 0 1 0 1 5 1.25
HILLSBOROUGH MANCHESTER Fee Tpk & I-293 (I0000293__) 285:2536 11 0 1 0 2 0 0 0 2 5 1.25
BELKNAP NEW HAMPTON Styles Bridges Hwy (I0000093__) 329:0098 1 0 1 0 1 0 1 0 1 4 1.00
ROCKINGHAM SALEM Alan B Shepard (I0000093__) 399:0069 11 0 1 0 1 0 0 0 2 4 1.00
ROCKINGHAM PORTSMOUTH Blue Star Memorial (I0000095_S) 379:6195 11 0 1 0 0 0 3 0 0 4 1.00
ROCKINGHAM PORTSMOUTH Blue Star Memorial (I0000095__) 379:8781 11 0 2 0 0 0 2 0 0 4 1.00
HILLSBOROUGH BEDFORD I 293 Nb (I0000293__) 037:0248 11 0 2 0 2 0 0 0 0 4 1.00
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293_S) 285:0198 11 0 3 0 0 0 0 0 1 4 1.00
MERRIMACK CONCORD F. E. Everett Tpk (I0000093__) 099:0018 11 0 2 0 1 0 0 0 0 3 0.75
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293_S) 285:0066 11 0 0 0 0 0 0 0 3 3 0.75
HILLSBOROUGH MANCHESTER Fee Tpk & I-293 (I0000293_S) 285:2815 11 0 2 0 0 0 0 0 1 3 0.75
MERRIMACK BOW Fee Tpk (I0000093__) 051:0322 11 0 2 0 1 0 0 0 0 3 0.75
HILLSBOROUGH MANCHESTER 101 By Pass (I0000293__) 285:6115 11 0 1 0 0 0 2 0 0 3 0.75
MERRIMACK CONCORD F. E. Everett Tpk (I0000093__) 099:0731 11 0 0 0 2 0 0 0 1 3 0.75
BELKNAP NEW HAMPTON Styles Bridges Hwy (I0000093_S) 329:0085 1 0 2 0 0 0 1 0 0 3 0.75

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Major Arterial Intersections

COUNTY TOWN STREET SECTION ID FUNCT CLASS F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES Avg Crashes per Year
HILLSBOROUGH MANCHESTER Bridge St (L2850044__) 285:2341 14 0 10 0 5 0 10 0 7 32 8.00
ROCKINGHAM PORTSMOUTH Ports Traffic Cir (C3796900__) 379:1191 12 0 1 0 6 0 13 0 11 31 7.75
HILLSBOROUGH NASHUA Main St (L3150008__) 315:1510 14 0 7 0 7 0 5 0 5 24 6.00
HILLSBOROUGH MANCHESTER S Willow St (S0000028__) 285:0203 14 0 9 0 6 0 7 0 2 24 6.00
GRAFTON LEBANON River Rd (S0000012A_) 253:0460 14 0 5 0 8 0 8 0 3 24 6.00
HILLSBOROUGH MANCHESTER S Willow St (S0000028__) 285:0313 14 0 4 0 8 0 4 0 2 18 4.50
ROCKINGHAM SALEM Broadway (S0000028__) 399:0472 14 0 2 0 9 0 2 0 4 17 4.25
ROCKINGHAM PLAISTOW Danville Rd (S0000125__) 375:0019 14 0 6 0 5 0 2 0 4 17 4.25
ROCKINGHAM PORTSMOUTH US 1 Bypass (U0000001B_) 379:0252 12 0 0 0 1 0 3 0 13 17 4.25
HILLSBOROUGH MANCHESTER Elm St (U0000003__) 285:1752 14 0 1 0 6 0 3 0 6 16 4.00
HILLSBOROUGH MANCHESTER Mcgregor St (L2850053__) 285:2209 14 0 6 0 3 0 4 0 3 16 4.00
HILLSBOROUGH NASHUA Amherst St (S0000101A_) 315:2032 14 0 2 0 4 0 4 0 5 15 3.75
HILLSBOROUGH NASHUA Henri Burque Hwy. (U0000003__) 315:2391 14 0 0 0 3 0 4 0 8 15 3.75
HILLSBOROUGH MANCHESTER Hanover St (L2850049__) 285:2140 14 0 3 0 3 0 4 0 4 14 3.50
HILLSBOROUGH MANCHESTER Elm St (U0000003__) 285:0986 14 0 2 0 2 0 6 0 4 14 3.50
HILLSBOROUGH NASHUA Main St (L3150008__) 315:1525 14 0 5 0 6 0 3 0 0 14 3.50
HILLSBOROUGH MANCHESTER Second St (L2850228__) 285:0957 14 0 3 0 5 0 0 0 5 13 3.25
HILLSBOROUGH MANCHESTER Bridge St (L2850044__) 285:2375 14 0 3 0 3 0 2 0 5 13 3.25
HILLSBOROUGH MANCHESTER Second St (U0000003__) 285:0727 14 0 6 0 5 0 2 0 0 13 3.25
HILLSBOROUGH MANCHESTER S Willow St (L2850029__) 285:0828 14 0 3 0 2 0 3 1 4 13 3.25

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Minor Arterial Intersections

COUNTY TOWN STREET SECTION ID FUNCT CLASS F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES Avg Crashes per Year
HILLSBOROUGH MANCHESTER Beech St (S0000028_S) 285:1831 16 0 8 0 5 1 5 0 4 23 5.75
HILLSBOROUGH MANCHESTER Spruce St (L2850865__) 285:1737 16 0 4 0 9 0 3 0 6 22 5.50
HILLSBOROUGH MANCHESTER Valley St (L2850599__) 285:1001 16 0 5 0 4 0 9 0 3 21 5.25
HILLSBOROUGH MANCHESTER Beech St (S0000028_S) 285:0834 16 0 5 0 4 0 6 0 5 20 5.00
BELKNAP LACONIA So Main St (S0000106__) 245:0143 16 0 3 0 6 0 6 0 2 17 4.25
HILLSBOROUGH MANCHESTER Valley St (L2850599__) 285:1035 16 0 4 0 7 0 5 0 1 17 4.25
ROCKINGHAM GREENLAND Portsmouth Av (S0000033__) 187:0071 16 0 4 0 8 0 0 0 3 15 3.75
HILLSBOROUGH NASHUA Main Dunstable Rd (S0000111A_) 315:0397 16 0 3 0 5 0 5 0 1 14 3.50
ROCKINGHAM HAMPSTEAD NH 111 (S0000111__) 195:0067 16 0 2 0 5 0 4 0 2 13 3.25
MERRIMACK CONCORD Loudon Rd (S0000009__) 099:0476 16 0 1 0 4 0 4 0 3 12 3.00
STRAFFORD SOMERSWORTH Dover Rd* (S0000108__) 415:0098 16 0 2 0 2 0 4 0 4 12 3.00
ROCKINGHAM DERRY Londonderry Tpk (S0000028__) 119:0024 16 0 1 0 3 0 5 0 3 12 3.00
HILLSBOROUGH MANCHESTER Valley St (L2850599__) 285:0990 16 0 3 0 2 0 3 0 4 12 3.00
ROCKINGHAM HAMPSTEAD Walnut Hill (S0000121__) 195:0105 16 0 1 0 2 0 7 0 2 12 3.00
ROCKINGHAM HAMPSTEAD Walnut Hill (S0000121__) 195:0295 16 0 3 0 3 0 3 0 3 12 3.00
HILLSBOROUGH MANCHESTER Maple St (S0000028__) 285:1848 16 0 1 0 4 0 5 0 1 11 2.75
MERRIMACK CONCORD Sheep Davis Rd (S0000106__) 099:1366 16 0 2 0 2 0 4 0 3 11 2.75
HILLSBOROUGH MANCHESTER Maple St (S0000028__) 285:2933 16 0 1 0 2 0 3 0 5 11 2.75
HILLSBOROUGH MANCHESTER Maple St (S0000028__) 285:1828 16 0 3 0 6 0 2 0 0 11 2.75
HILLSBOROUGH MANCHESTER Union St (L2850553__) 285:2174 16 0 1 0 4 0 5 0 1 11 2.75

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Major Collector Intersections

COUNTY TOWN STREET SECTION ID FUNCT CLASS F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES Avg Crashes per Year
HILLSBOROUGH MANCHESTER Chestnut St (L2850775__) 285:2773 17 0 0 0 5 0 4 0 7 16 4.00
HILLSBOROUGH MANCHESTER Bremer St (L2850338__) 285:2422 17 0 1 0 4 0 6 0 4 15 3.75
ROCKINGHAM PORTSMOUTH Maplewood Av (L3790368__) 379:1038 17 0 2 0 6 0 2 0 2 12 3.00
HILLSBOROUGH MANCHESTER Chestnut St (L2850775__) 285:2572 17 0 2 0 4 0 3 0 3 12 3.00
ROCKINGHAM SALEM Vet'S Memorial Pky (L3990368__) 399:0317 17 0 2 0 5 0 3 0 1 11 2.75
ROCKINGHAM RAYMOND Chester Rd (S0000107__) 383:0347 17 0 4 0 4 0 1 0 2 11 2.75
HILLSBOROUGH MANCHESTER Belmont St (L2850581__) 285:1803 17 0 1 0 3 0 4 0 2 10 2.50
BELKNAP GILFORD Cherry Valley Rd (S0000011A_) 169:0301 17 0 3 0 2 0 2 0 2 9 2.25
HILLSBOROUGH MANCHESTER Pine St (L2850831__) 285:0858 17 0 1 0 2 0 3 0 2 8 2.00
HILLSBOROUGH MANCHESTER Chestnut St (L2850775__) 285:2599 17 0 1 0 2 0 3 0 2 8 2.00
BELKNAP BELMONT Gilmanton Rd (S0000140__) 039:0061 7 0 3 0 3 0 2 0 0 8 2.00
HILLSBOROUGH MANCHESTER Pine St (L2850831__) 285:2173 17 0 3 0 0 0 2 0 3 8 2.00
HILLSBOROUGH MANCHESTER Weston Rd (L2851081__) 285:0340 17 0 3 0 4 0 0 0 1 8 2.00
HILLSBOROUGH MANCHESTER So. Porter St (L2851246__) 285:0334 17 0 2 0 2 0 3 0 1 8 2.00
MERRIMACK CONCORD Liberty St (L0990395__) 099:0410 17 0 1 0 2 0 3 0 1 7 1.75
MERRIMACK CONCORD Mountain Rd (S0000132__) 099:1204 17 0 6 0 0 0 0 0 1 7 1.75
MERRIMACK CONCORD Rumford St (L0990334__) 099:0726 17 0 2 0 4 0 0 0 1 7 1.75
HILLSBOROUGH MANCHESTER North St (L2850764__) 285:2789 17 0 1 0 3 0 0 0 3 7 1.75
HILLSBOROUGH MANCHESTER Chestnut St (L2850775__) 285:1875 17 0 1 0 3 0 3 0 0 7 1.75
HILLSBOROUGH MANCHESTER Spruce St (L2850865__) 285:1783 17 0 2 0 1 0 1 0 3 7 1.75

Crash Rate: (Total Crashes x 1,000,000) / (AADT_AVG x 365 Days x 4 years x Section Length)

HSIP June 2007

Minor Collector Intersections

COUNTY TOWN STREET SECTION ID FUNCT CLASS F02 I02 F03 I03 F04 I04 F05 I05 TOTAL CRASHES Avg Crashes per Year
ROCKINGHAM BRENTWOOD Southside Rd. (S0000027__) 055:0084 8 0 4 0 1 0 0 0 1 6 1.50
HILLSBOROUGH GOFFSTOWN East Dunbarton Rd (L1750065__) 175:0814 8 0 0 0 4 0 0 0 0 4 1.00
MERRIMACK PEMBROKE N Pembroke Rd (L3610079__) 361:0231 8 0 0 0 0 0 1 0 2 3 0.75
STRAFFORD LEE North River Rd (S0000155__) 255:0090 8 0 1 0 1 0 0 0 1 3 0.75
STRAFFORD FARMINGTON Main St (S0000153__) 155:0135 8 0 0 0 1 0 1 0 1 3 0.75
HILLSBOROUGH WEARE Deering Center Rd (S0000149__) 471:0037 8 0 1 0 1 0 1 0 0 3 0.75
HILLSBOROUGH AMHERST Baboosic Lake Rd (L0130051__) 013:0365 8 0 1 0 2 0 0 0 0 3 0.75
HILLSBOROUGH WEARE Deering Center Rd (S0000149__) 471:0127 8 0 0 0 0 0 0 0 3 3 0.75
HILLSBOROUGH MILFORD North River Rd (N3030050__) 303:0147 8 0 1 0 1 0 0 0 1 3 0.75
HILLSBOROUGH WEARE Deering Center Rd (S0000149__) 471:0125 8 0 0 0 0 0 2 0 1 3 0.75
ROCKINGHAM DERRY Island Pond Rd (N1190050__) 119:0401 8 0 0 0 0 0 2 0 0 2 0.50
CARROLL WOLFEBORO Elm St (S0000109A_) 493:0139 8 0 1 0 0 0 1 0 0 2 0.50
ROCKINGHAM DANVILLE Main St (S0000111A_) 113:0089 8 0 0 0 0 0 1 0 1 2 0.50
COOS MILAN Muzzy Hill Rd (S0000110A_) 301:0061 8 0 0 0 0 0 0 0 2 2 0.50
ROCKINGHAM RAYMOND Lane Rd (L3830062__) 383:0087 8 0 1 0 0 0 0 0 1 2 0.50
HILLSBOROUGH BROOKLINE Mason Rd (N0630095__) 063:0070 8 0 1