Colorado 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.
Colorado Department of Transportation
Highway Safety Improvement Program Annual Report 2007
HSIP 5% Report Synthesis
This report listing represents a minimum of 5% of the locations in Colorado that exhibit an accident history greater than the statewide average (see Table 2). There are no impediments to implementing the suggested countermeasures other than funding. The methodology of pattern recognition and direct diagnostics techniques was used to generate this listing. This methodology was developed to conduct diagnostic analysis of safety problems for different classes of roads in various environments. This methodology is based on numerous research papers1 and actual applications of the theories and principles in Colorado. Revised brief excerpts from these papers are provided below which explain the methodology used. All the analysis methods are available and are used on all public roads in Colorado.
There is an established consensus among traffic safety researchers that a nonlinear relationship exists between traffic exposure and safety. This relationship is reflected by the safety performance functions (SPFs) calibrated for various classes of roads and intersections. One of the main uses of SPFs is to identify locations with potential for accident reduction. While this application is certainly important, the use of SPFs provides no information related to the nature of the accident occurrence. Without being able to relate accident frequency and severity to roadway geometrics, traffic control devices, roadside features, roadway condition, driver behavior, or vehicle type, it is not possible to develop effective countermeasures. A methodology was developed to provide guidance in diagnostics of safety problems, recognition of accident patterns, and development of appropriate countermeasures. Considering that traffic accidents can be viewed as random Bernoulli trials, it is possible to detect deviation from the statistical process by computing observed cumulative probability for each of the accident characteristics. Detection of an accident pattern at an intersection suggests the presence of an element in the roadway environment that triggered a deviation from a random statistical process in the direction of reduced safety. Identification of such an element always provides a critical clue to accident causality.
A framework of 84 normative parameters was developed to provide a knowledge base for diagnostic analysis of different classes of roads in rural and urban environments. Because traffic accidents can be viewed as random Bernoulli trials, it is possible to detect deviation from the random statistical process by computing the observed cumulative probability for each of the 84 normative parameters. The 84 parameters can be grouped into 11 general categories: accident type, severity, accident location, road condition, direction of travel, lighting condition, vehicle type, human factors, driver condition, weather condition, and time of day. It is important to note that some, but not all, normative parameters within the same safety performance function (SPF) change with annual average daily traffic (AADT). For instance, in general, the severity of accidents gradually decreases and the distribution of accidents by accident type changes with AADT. With this in mind, 84 normative parameters were stratified for three ranges of AADT: low, medium, and high. In the process of assessing the nature and magnitude of safety problems at specific locations, SPF analysis should be used in conjunction with an appropriate diagnostic investigation by using the pattern recognition algorithm. The stratification of the diagnostic parameters by AADT improves the ability to identify accident patterns more accurately. For instance, for the low range of AADT on two-lane mountainous roads, the average proportion of head-on collisions is 2%, while it is 8% for the high range of AADT. Not accounting for this change would lead to misdiagnosis of the problem. While level of service of safety (LOSS) provides a means of assessment of the magnitude of the safety problem, it is important to understand that accident patterns susceptible to correction may exist with or without overrepresentation in total frequency, as detected by SPF.
Colorado has a extensive crash data and roadway inventory system available in database format. Some of the information is electronically gathered, transferred, and processed, while much of it though is still done on paper and later translated to electronic format. Colorado's goal for a fully automated traffic records system and timely collection of data is 2010.
For more information, please contact Bryan Allery, Traffic Engineer, Colorado Department of Transportation, 303.757.9967.
1Kononov, J and Janson, B, Diagnostic Methodology for the Detection of Safety Problems at Intersections In Transportation Research Record 1784, TRB, National Research Council, Washington, D.C., 2002 and;
Kononov, J and Allery, B, Level of Service of Safety Conceptual Blueprint and Analytical Framework In Transportation Research Record 1840, TRB, National Research Council, Washington, D.C., 2003.
| Highway Information | Description | ADT | Accident History | Dates | Type of Improvement |
B/C | Cost Estimate |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reg | Hwy | Sec | From | To | PDO | INJ | FAT | From | To | |||||
| 1 | 9 | CD | Various | SH9C from Fairplay to I-70/SH9D from I-70 to Summit Co Line | 6,592 | 724 | 274 | 6 | 01/01/96 | 12/31/98 | VMS for Weather, High Wind, Adverse Conditions | 3.70 | $ 600,000 | |
| 1 | 24 | C | 453.86 | 454.87 | SH024C @ Lincoln | 2,632 | 11 | 5 | 0 | 01/01/96 | 12/31/98 | Upgrade to 12" LED's and Backing Plates | 1.48 | $ 50,000 |
| 1 | 67 | E | 117.40 | 124.00 | SH67 west of Sedalia | 1,358 | 37 | 27 | 0 | 01/01/99 | 12/31/03 | Median rumble strips | 7.86 | $ 50,000 |
| 1 | 70 | A | 202.50 | 205.00 | I-70 near Frisco | 33,394 | 171 | 58 | 3 | 01/01/99 | 12/31/03 | Median rail | 10.21 | $ 465,000 |
| 1 | 70 | A | 205.00 | 207.00 | I-70 near Silverthorne | 29,689 | 129 | 45 | 2 | 01/01/99 | 12/31/03 | Median rail | 7.75 | $ 285,000 |
| 1 | 70 | A | 210.00 | 212.00 | I-70 at Upper Straight Creek | 28,642 | 145 | 30 | 1 | 01/01/99 | 12/31/03 | Guard rail | 1.11 | $ 100,000 |
| 1 | 70 | A | 221.30 | 224.50 | I-70 West of Bakerville | 25,815 | 120 | 54 | 1 | 01/01/99 | 12/31/03 | Median rail | 4.87 | $ 590,000 |
| 1 | 70 | A | 241.10 | 243.30 | I-70 near Hidden Valley | 42,741 | 147 | 76 | 2 | 01/01/99 | 12/31/03 | Median rail | 17.82 | $ 155,000 |
| 1 | 70 | A | 246.50 | 251.30 | I-70 near Evergreen Pkwy | 37,892 | 288 | 108 | 6 | 01/01/99 | 12/31/03 | Median rail | 6.12 | $ 885,000 |
| 1 | 119 | A | 2.20 | 22.70 | SH119 from MP 2.0 to Boulder-Gilpin County Line | 6,520 | 164 | 128 | 2 | 01/01/96 | 12/31/98 | VMS for Weather, High Wind, Adverse Conditions | 2.33 | $ 250,000 |
| 1 | 285 | D | 163.50 | 248.37 | SH285 from S/O Co Rd 402 to SH 8 Interchange | 7,488 | 811 | 388 | 13 | 01/01/96 | 12/31/98 | VMS for Weather, High Wind, Adverse Conditions | 3.24 | $ 880,000 |
| 1 | 285 | D | 224.90 | 224.98 | SH285 at CR 72 near Bailey | 8,915 | 23 | 10 | 0 | 01/01/98 | 12/31/02 | Relocate intersection, modify access by consolidation | 1.27 | $ 538,000 |
| 1 | Elbert Rd | Co Rd 25-41 south of SH 86 | 1,746 | 2 | 3 | 0 | 05/01/03 | 09/30/05 | Intersection geometric improvements | 4.06 | $ 74,000 | |||
| 1 | Various SH Location | SH006F, SH009C, SH009D, SH085B | 9,999 | 0 | 0 | 0 | 01/01/96 | 12/31/98 | Upgrade to 12" LED's and Backing Plates | 3.73 | $ 300,000 | |||
| 2 | 24 | A | 278.09 | 278.60 | SH24A in Divide | 14,007 | 22 | 5 | 0 | 01/01/96 | 12/31/98 | Add Two-Way Left Turn w/Raised Median, Upgrade Signals, Access Control | 1.16 | $ 400,000 |
| 2 | 24 | A | 293.60 | 293.70 | SH24A at Fountain Ave/Topeka Ave | 27,685 | 96 | 62 | 2 | 01/01/96 | 12/31/98 | New Signals and Realign Intersection | 2.04 | $ 175,000 |
| 2 | 24 | A | 294.70 | 296.60 | SH 24 from MP 294.70 to MP 296.60 | 25,534 | 114 | 54 | 2 | 01/01/99 | 12/31/03 | Install guardrail at selected sections of the roadway | 1.40 | $ 750,000 |
| 2 | 24 | A | 318.68 | 318.78 | SH24A at Dodge Road E/O Colorado Springs | 13,403 | 9 | 13 | 1 | 01/01/96 | 12/31/98 | New Signal, Right Turn Decel Lane | 1.70 | $ 200,000 |
| 2 | 24 | A | 322.48 | 322.59 | SH24A at Judge Orr Rd E/O Colorado Springs | 6,695 | 5 | 8 | 1 | 01/01/96 | 12/31/98 | Realign Intersection to match, add left turn lanes, signalize | 1.57 | $ 300,000 |
| 2 | 24 | G | 306.98 | 306.98 | SH 24 at SH 83 | 66,000 | 206 | 49 | 0 | 01/01/99 | 12/31/01 | Widen N, S and E approaches, provide dual N & S lefts and E right turn lane | 2.53 | $ 600,000 |
| 2 | 25 | A | 20.50 | 21.90 | I-25 north of Trinidad | 9,855 | 4 | 12 | 3 | 01/01/99 | 12/31/03 | MBGR, culvert extensions, regrading and tree trimming | 1.42 | $ 350,000 |
| 2 | 45 | A | 1.26 | 1.36 | SH45A at Prairie | 16,624 | 301 | 185 | 2 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, and Detectors | 1.98 | $ 100,000 |
| 2 | 45 | A | 3.90 | 3.99 | SH 45 at Red Creek Springs Road/Rutgers Avenue | 25,617 | 43 | 18 | 1 | 01/01/03 | 12/31/05 | Signal upgrades and geometric improvements | 1.63 | $ 600,000 |
| 2 | 45 | A | 3.90 | 4.00 | SH45A at Rutgers | 22,683 | 74 | 36 | 0 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, and Detectors | 2.48 | $ 100,000 |
| 2 | 45 | A | 5.02 | 5.12 | SH45A at Goodnight | 20,702 | 64 | 38 | 0 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, and Detectors | 1.31 | $ 100,000 |
| 2 | 50 | A | 263.00 | 266.70 | SH 50 between MP 263.00 and MP 266.70 | 3,157 | 14 | 20 | 0 | 01/01/99 | 12/31/03 | Install guardrail along sections of WB SH 50 | 1.16 | $ 525,000 |
| 2 | 50 | A | 279.32 | 279.42 | SH50A at 16th/Main | 22,522 | 98 | 32 | 0 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, Detectors, Close S Frnt Rd, Rt Turn Lanes | 2.26 | $ 300,000 |
| 2 | 50 | A | 280.26 | 280.36 | SH50A at Reynolds | 20,488 | 188 | 79 | 1 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, and Detectors, Coordinate with Frntg Rd | 1.16 | $ 200,000 |
| 2 | 50 | A | 309.74 | 309.82 | SH 50 at Purcell Boulevard | 26,589 | 54 | 38 | 0 | 01/01/99 | 12/31/03 | Widening Purcell Blvd, upgrade signals, and signal timing | 1.58 | $ 1,400,000 |
| 2 | 50 | A | 313.15 | 313.80 | SH50 in Pueblo between Fortino and Wills | 34,953 | 177 | 98 | 1 | 01/01/99 | 12/31/03 | Widening, Singal Improvements, Turn Lanes, Access Modifications | 2.17 | $ 2,878,066 |
| 2 | 50 | A | 313.47 | 313.57 | SH50A at Baltimore | 27,744 | 98 | 47 | 2 | 01/01/96 | 12/31/98 | Upgrade Signals, Mast Arms, Heads, and Detectors | 1.76 | $ 100,000 |
| 2 | 50 | B | 335.71 | 335.76 | SH50 at SH 209 at Avondale | 3,983 | 5 | 6 | 0 | 01/01/99 | 12/31/03 | Left turn lane | 1.06 | $ 280,000 |
| 2 | 50 | B | 368.88 | 368.98 | SH50B at SH71 | 6,219 | 31 | 7 | 0 | 01/01/96 | 12/31/98 | New Signal | 2.57 | $ 100,000 |
| 2 | 50 | C | 2.81 | 2.91 | SH50C at Aspen | 22,392 | 175 | 86 | 3 | 01/01/96 | 12/31/98 | Upgrade Signals, Widen Approaches, Improve Radii | 1.70 | $ 150,000 |
| 2 | 83 | A | 21.19 | 21.29 | SH83A at Shoup Road | 8,313 | 15 | 13 | 0 | 01/01/96 | 12/31/98 | Add Left and Right Turn Lanes, and Lighting at Intersection | 1.84 | $ 200,000 |
| 2 | 94 | A | 8.04 | 8.14 | SH94A at Curtis (Co Rd 439) | 7,683 | 17 | 9 | 0 | 01/01/96 | 12/31/98 | Add Left Turn Lanes, Upgrade Signals | 1.83 | $ 174,000 |
| 2 | 115 | A | 3.80 | 6.80 | SH 115 from MP 3.80 to MP 6.80 | 5,576 | 44 | 31 | 1 | 01/01/99 | 12/31/03 | Install guardrail at selected locations and shoulder widening where needed | 3.11 | $ 762,571 |
| 2 | 115 | A | 4.61 | 4.71 | SH115A at McKenzie | 6,859 | 142 | 88 | 0 | 01/01/96 | 12/31/98 | Add Left and Right Turn Lanes, Lighting, and Reconfigure Intersection | 1.16 | $ 200,000 |
| 2 | 165 | A | 18.65 | 23.90 | SH165 near the San Isabel Reservoir | 988 | 4 | 9 | 1 | 01/01/99 | 12/31/03 | MBGR | 4.75 | $ 500,000 |
| 2 | El Paso at Fillmore | El Paso St at Fillmore St | 46,500 | 45 | 6 | 0 | 03/31/03 | 03/31/06 | Signal and PED upgrades, realignment N/S leg of intersection | 1.28 | $ 250,000 | |||
| 3 | 50 | A | 35.33 | 35.43 | SH 50 at Road 28-1/2 | 12,267 | 5 | 15 | 1 | 01/01/99 | 12/31/03 | Install new signal - county agreed to inlcude a dilemma zone system in the design | 1.14 | $ 681,725 |
| 3 | 70 | A | 153.00 | 167.00 | I-70 West of Vail | 26,635 | 437 | 151 | 4 | 01/01/02 | 12/31/04 | Wildlife Fencing | 4.00 | $ 750,000 |
| 3 | 70 | A | 171.00 | 173.50 | I-70 between MP 171.00 and MP 173.50 (Dowd Canyon) | 32,821 | 136 | 48 | 1 | 01/01/01 | 12/31/03 | Wildlife fence, drainage improvements, extension of EB on ramp, signing, striping and lighting | 2.29 | $ 600,000 |
| 3 | 70 | B | 0.40 | 1.30 | SH 70B between MP 0.40 and MP 1.30 (Industrial Development) | 20,098 | 19 | 7 | 1 | 01/01/01 | 12/31/03 | Realignment, signalization and median channelization as well as access control | 4.17 | $ 500,000 |
| 3 | 82 | A | 0.18 | 0.18 | SH 82 at Pine St in Glenwood | 26,871 | 72 | 13 | 0 | 01/01/98 | 12/31/02 | Geometry and signal upgrades | 2.28 | $ 100,000 |
| 3 | 82 | A | 7.00 | 11.00 | SH 82 between MP 7.00 and MP 11.00 | 21,788 | 103 | 31 | 2 | 01/01/01 | 12/31/03 | New deer fence, repair of existing deer fence and installation of WA passages | 1.29 | $ 1,000,000 |
| 3 | 82 | A | 11.70 | 11.70 | SH 83 and SH 133 intersection in Carbondale | 16,312 | 20 | 18 | 1 | 01/01/99 | 12/31/01 | Double left for WB | 3.92 | $ 643,000 |
| 3 | 114 | A | 0.00 | 18.00 | SH 114 Cochetopa Canyon Curve Correction | 465 | 49 | 14 | 1 | 01/01/99 | 12/31/03 | Curve Corrections, Rock Removal, CL Rumbles?, Shoulders @ Spot Locations | 1.02 | $ 150,000 |
| 3 | 550 | B | 127.74 | 128.74 | SH 550 at Niagara | 22,670 | 153 | 48 | 0 | 01/01/01 | 12/31/03 | Dual WB left turn lanes, single right turn lane, close adjacent driveway | 1.44 | $ 300,000 |
| 3 | 550 | B | 128.01 | 128.24 | Highway 550 from Church St to Niagara Rd | 20,714 | 55 | 19 | 0 | 01/01/01 | 12/31/03 | Raised median | 1.87 | $ 250,000 |
| 3 | 23 Road | 23 Road at G Road | 3,467 | 8 | 12 | 1 | 01/01/00 | 12/31/05 | Roundabout to replace stop controlled intersection | 2.38 | $ 920,000 | |||
| 3 | 50 and 550 | SH 50 at Park Ave. and SH 550 at South 5th St. in Montrose | 40,523 | 39 | 17 | 2 | 01/01/00 | 12/31/02 | General signal upgrades | 2.17 | $ 400,000 | |||
| 3 | High School Road | High School Road in Mesa County | 34,520 | 22 | 20 | 2 | 01/01/99 | 12/31/01 | Intersection relocation and realignment | 8.65 | $ 584,000 | |||
| 4 | 1 | A | 1.84 | 1.84 | SH1 at Weld County Road 54 | 5,718 | 4 | 6 | 0 | 01/01/01 | 12/31/03 | Add new signal, NB and SB left turn lanes and dilemma zone protection | 1.94 | $ 120,000 |
| 4 | 6 | J | 434.60 | 435.67 | SH 6 from MP 434.6 to MP 435.67 | 1,567 | 5 | 1 | 1 | 01/01/98 | 12/31/00 | Widen shoulders, rumble strips, delineators and striping | 11.98 | $ 150,000 |
| 4 | 7 | A | 5.60 | 7.00 | SH 7 near Estes Park | 1,951 | 3 | 5 | 0 | 01/01/98 | 12/31/01 | Slope flattening, shoulder widening, signing and guardrail | 1.05 | $ 275,000 |
| 4 | 7 | A | 19.15 | 24.60 | SH 7 from MP 19.15 to MP 24.6 | 1,450 | 13 | 11 | 1 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes, improve signing and add guardrail | 5.87 | $ 100,000 |
| 4 | 14 | B | 95.20 | 96.70 | SH 14 from MP 95.2 to MP 96.7 | 1,550 | 2 | 4 | 0 | 01/01/98 | 12/31/00 | Guardrail and striping | 2.99 | $ 100,000 |
| 4 | 14 | C | 219.76 | 226.30 | SH 14 from MP 219.76 to MP 226.3 | 1,366 | 8 | 6 | 1 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes, improve signing and striping | 10.04 | $ 200,000 |
| 4 | 25 | A | 262.30 | 262.50 | I-25 at Windsor, west ramp intersection | 18,187 | 17 | 11 | 0 | 01/01/01 | 12/31/03 | Widen ramp shoulders, restripe to 2 lanes and add 500' of length | 1.03 | $ 250,000 |
| 4 | 34 | A | 64.70 | 66.30 | SH 34 near Estes Park | 5,196 | 23 | 13 | 0 | 01/01/98 | 12/31/01 | Auxiliary lanes, signing and delineators | 1.21 | $ 225,000 |
| 4 | 34 | A | 110.18 | 110.29 | SH 34 at 35th Avenue | 32,331 | 48 | 22 | 0 | 01/01/01 | 12/31/03 | Reconfiguring WB left and right turn lanes | 1.01 | $ 416,815 |
| 4 | 34 | D | 3.55 | 3.60 | SH34 at 83rd Ave in Greeley | 15,187 | 11 | 5 | 0 | 01/01/01 | 12/31/04 | Add left turn lanes for EB and WB | 1.02 | $ 350,000 |
| 4 | 36 | B | 0.97 | 1.48 | SH 036B near Estes Park E/O SH 7A Jct | 6,660 | 16 | 10 | 0 | 01/01/96 | 12/31/98 | Replace Wood Posts and Wire w/MBGR to Separate Vehicles from Lake/Peds | 1.03 | $ 87,500 |
| 4 | 36 | D | 168.59 | 172.52 | SH 36 from MP 168.59 to MP 172.52 | 841 | 2 | 2 | 1 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes, improve signing and striping | 1.37 | $ 100,000 |
| 4 | 37 | A | 2.84 | 6.70 | SH 37 from MP 2.84 to MP 6.7 | 1,681 | 7 | 7 | 0 | 01/01/98 | 12/31/00 | Flatten sideslopes and improve signing and striping | 5.93 | $ 75,000 |
| 4 | 42 | A | 1.95 | 1.97 | SH 42 at South Boulder Road | 14,204 | 68 | 20 | 1 | 01/01/99 | 12/31/03 | Widening, geometric improvements, double lefts, protected-only | 1.04 | $ 2,550,000 |
| 4 | 52 | A | 1.15 | 7.25 | SH 52 at 79th, 95th, SH287 and CR901 | 12,212 | 102 | 72 | 3 | 01/01/01 | 12/31/03 | Dilemma zone protection at 4 intersections | 2.56 | $ 100,000 |
| 4 | 52 | A | 27.46 | 27.47 | SH 52 at Co Rd 41 | 4,532 | 1 | 2 | 2 | 01/01/01 | 12/31/03 | Construct left turn lanes on mainline | 13.83 | $ 300,000 |
| 4 | 52 | A | 52.00 | 54.60 | SH 52 from MP 52 to MP 54.6 | 443 | 1 | 3 | 0 | 01/01/98 | 12/31/00 | Widen shoulders and flatten sideslopes | 1.37 | $ 100,000 |
| 4 | 55 | A | 2.24 | 4.50 | SH 55 from MP 2.24 to MP 4.50 near Crook | 833 | 2 | 5 | 0 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes and new striping | 1.68 | $ 200,000 |
| 4 | 60 | A | 2.08 | 4.56 | SH 60 from MP 2.08 to MP 4.56 | 1,195 | 4 | 6 | 0 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes and new striping | 1.75 | $ 150,000 |
| 4 | 61 | A | 32.50 | 35.00 | SH 61 near Sterling | 1,047 | 1 | 2 | 1 | 01/01/01 | 12/31/03 | Flatten side slopes, signs and guardrail | 3.53 | $ 350,000 |
| 4 | 66 | B | 36.58 | 37.38 | SH 66 from MP 36.58 to MP 37.38 | 8,225 | 70 | 29 | 1 | 01/01/98 | 12/31/00 | Improve turn lanes, add guardrail, signing and striping | 6.20 | $ 100,000 |
| 4 | 71 | D | 130.10 | 134.64 | SH 71 from MP 130.1 to MP 134.64 | 946 | 2 | 5 | 0 | 01/01/98 | 12/31/00 | Flatten sideslopes and improve signing and striping | 1.75 | $ 150,000 |
| 4 | 71 | D | 153.00 | 157.20 | SH 71 from MP 153 to MP 157.2 | 1,070 | 4 | 3 | 1 | 01/01/98 | 12/31/00 | Flatten sideslopes and improve signing and striping | 2.50 | $ 75,000 |
| 4 | 71 | E | 181.70 | 195.00 | SH 71 from MP 181.7 to MP 195 | 355 | 6 | 6 | 0 | 01/01/98 | 12/31/00 | Flatten sideslopes, add guardrail and improve signing | 1.95 | $ 150,000 |
| 4 | 72 | B | 41.03 | 47.50 | SH 72 from MP 41.03 to MP 47.5 | 1,232 | 14 | 10 | 1 | 01/01/98 | 12/31/00 | Flatten sideslopes, add guardrail and improve signing and striping | 2.48 | $ 200,000 |
| 4 | 76 | A | 57.90 | 59.70 | I 76 in Weld County between Roggen and Wiggins | 8,477 | 21 | 13 | 3 | 01/01/98 | 12/31/01 | Slope flattening, bridge rail and signing | 1.23 | $ 275,000 |
| 4 | 85 | C | 239.09 | 241.40 | SH 85 from MP 239.09 to MP 241.4 | 19,458 | 36 | 34 | 2 | 01/01/98 | 12/31/00 | Accel/Decel lanes, striping and rumble strips | 1.53 | $ 2,500,000 |
| 4 | 85 | C | 296.20 | 298.20 | SH 85 from MP 296.2 to MP 298.2 | 1,654 | 4 | 3 | 0 | 01/01/98 | 12/31/00 | Flatten sideslopes, rumble strips, signing and striping | 2.22 | $ 100,000 |
| 4 | 119 | B | 46.02 | 46.12 | SH 119 at Jay Road in Boulder County NE of Boulder | 48,940 | 47 | 30 | 1 | 01/01/98 | 12/31/01 | Signals, guardrail, lighting, signing and striping | 1.11 | $ 550,000 |
| 4 | 119 | B | 54.36 | 54.44 | SH119 at Hover Rd | 26,514 | 59 | 29 | 1 | 01/01/01 | 12/31/03 | Extend NB LTL's 250 feet and SB RT accel lane | 1.22 | $ 75,000 |
| 4 | 138 | A | 1.85 | 3.50 | SH 138 northeast of Sterling | 3,537 | 6 | 9 | 1 | 01/01/98 | 12/31/01 | Signing, lighting, auxiliary lanes, widen shoulders and improve sight distance | 1.23 | $ 175,000 |
| 4 | 144 | A | 1.48 | 13.30 | SH 144 from MP 1.48 to MP 13.3 | 319 | 6 | 6 | 1 | 01/01/98 | 12/31/00 | Widen shoulders, flatten sideslopes, rumble strips, signing and striping | 1.68 | $ 200,000 |
| 4 | 257 | A | 6.90 | 8.03 | SH 257 in Weld County South of Windsor | 7,263 | 14 | 8 | 0 | 01/01/98 | 12/31/01 | Shoulder Improvements | 1.00 | $ 150,000 |
| 4 | 287 | C | 331.65 | 331.70 | SH 287 at 19th St | 11,951 | 6 | 8 | 0 | 01/01/02 | 12/31/03 | Install new traffic signal | 1.47 | $ 370,000 |
| 4 | 287 | C | 335.73 | 335.77 | SH287 at 37th St | 29,757 | 15 | 17 | 0 | 01/01/01 | 12/31/03 | Signal upgrades and minor geometric improvements | 2.39 | $ 365,000 |
| 4 | 287 | C | 339.05 | 341.59 | SH287 at Carpenter, Trilby, Skyway and Fossil Creek | 27,286 | 160 | 91 | 3 | 01/01/01 | 12/31/03 | Dilemma zone protection at 4 intersections | 3.45 | $ 165,000 |
| 4 | 287 | C | 342.23 | 342.28 | SH 287 at Kensington | 37,337 | 58 | 16 | 0 | 01/01/01 | 12/31/03 | Extend LT lanes, add pole mounted signals, LT phasing for side street, video detection and ped upgrades | 2.32 | $ 120,000 |
| 4 | 287 | C | 342.31 | 343.31 | SH 287 at Boardwalk | 39,884 | 249 | 82 | 1 | 01/01/01 | 12/31/03 | Extend SB to EB LT lane, add Prot-only phasing, signs, Ped upgrades and EB and WB pole signals | 13.51 | $ 100,000 |
| 4 | 287 | C | 342.52 | 342.54 | SH287 at Troutman | 37,337 | 51 | 13 | 1 | 01/01/01 | 12/31/03 | Convert NB and SB to Prot only, add pole mounted heads, add lane useage signs | 73.94 | $ 50,000 |
| 4 | 287 | C | 343.30 | 343.36 | SH287 at Monroe | 42,390 | 98 | 32 | 0 | 01/01/01 | 12/31/03 | Add pole mounted signals, extend left turn lanes, add P+P for side street, upgrade ped heads, install cameras | 6.61 | $ 100,000 |
| 4 | 287 | C | 343.70 | 343.75 | SH287 at Swallow Rd | 42,390 | 88 | 16 | 0 | 01/01/01 | 12/31/03 | Extend SB LTL 200 feet | 2.20 | $ 150,000 |
| 4 | 287 | C | 344.15 | 344.21 | SH287 at Drake | 42,964 | 112 | 29 | 0 | 01/01/01 | 12/31/03 | Lane useage signs and remove red-light running cameras | 1.08 | $ 40,000 |
| 4 | 287 | C | 344.65 | 344.68 | SH287 at Rutgers | 44,543 | 29 | 4 | 0 | 01/01/01 | 12/31/03 | Extend SB right turn lane, add P+P timing, install count-down ped heads and improve ped crossing | 1.27 | $ 50,000 |
| 4 | 287 | C | 345.18 | 345.22 | SH287 at Prospect | 43,884 | 83 | 21 | 0 | 01/01/01 | 12/31/03 | Install LED's and left turn lane useage signs | 2.84 | $ 50,000 |
| 4 | 287 | C | 345.33 | 345.33 | SH 287 and Lake St. | 48,600 | 38 | 6 | 0 | 01/01/99 | 12/31/02 | Raised median through intersection (convert to right-in right-out) | 4.13 | $ 190,000 |
| 4 | 287 | C | 347.70 | 347.77 | SH 287 at Hickory and Conifer | 22,004 | 25 | 15 | 0 | 01/01/01 | 12/31/03 | Widening for an additional left turn lane | 1.25 | $ 385,000 |
| 4 | 287 | C | 354.71 | 354.71 | SH287 at CR 54G | 7,953 | 3 | 6 | 2 | 01/01/01 | 08/07/05 | Move RT lane over and move stop bar on 54G forward, tree trimming | 16.01 | $ 150,000 |
| 4 | 287 | C | 370.94 | 372.50 | SH 287 from MP 370.94 to MP 372.5 | 3,693 | 6 | 5 | 0 | 01/01/98 | 12/31/00 | Flatten sideslopes, add rumble strips and guardrail | 2.41 | $ 100,000 |
| 4 | 385 | D | 259.37 | 260.75 | SH 385 from MP 259.37 to MP 260.75 | 1,163 | 1 | 0 | 1 | 01/01/98 | 12/31/00 | Improve signing and striping | 7.19 | $ 50,000 |
| 4 | 392 | A | 0.00 | 0.07 | SH392 over I-25 | 18,187 | 26 | 13 | 0 | 01/01/02 | 12/31/04 | Add left turn lane for WB to SB, radius improvements, realign NB ramps across from one another | 1.00 | $ 175,000 |
| 4 | 392 | B | 11.53 | 11.55 | SH 392 at Co Rd 31 | 4,945 | 3 | 5 | 0 | 01/01/01 | 12/31/03 | Construct left turn lanes on mainline | 1.24 | $ 325,000 |
| 4 | 392 | B | 20.98 | 22.00 | SH 392 from MP 20.98 to MP 22 | 1,303 | 8 | 4 | 1 | 01/01/98 | 12/31/00 | Widen shoulders and add guardrail | 1.09 | $ 150,000 |
| 4 | 402 | A | 0.99 | 1.01 | SH 402 at Co Rd 11H | 15,136 | 6 | 6 | 0 | 01/01/01 | 12/31/03 | Construct left turn lanes on mainline | 1.36 | $ 350,000 |
| 4 | CR 9 | Boyd Lake Ave. and Eisenhower Blvd. | 43,652 | 32 | 17 | 0 | 01/01/98 | 01/11/03 | Modify EB left turn lane, install LED bulbs | 1.82 | $ 100,000 | |||
| 4 | CR32 | CR32 at CR9 intersection | 10,200 | 12 | 7 | 0 | 02/11/00 | 12/14/02 | WB left turn lane | 1.07 | $ 206,150 | |||
| 5 | 160 | A | 88.29 | 88.34 | SH160 at SH 550 in Durango | 23,554 | 13 | 10 | 0 | 01/01/99 | 12/31/03 | Increase shoulder width, turning radii, advanced warning, timing improvements | 1.08 | $ 300,000 |
| 5 | 160 | A | 231.80 | 231.90 | Intersection of SH 160 and Victoria St. | 19,515 | 18 | 6 | 0 | 01/01/98 | 12/31/02 | New signal, raised median, geometric improvements | 1.13 | $ 700,000 |
| 5 | 160 | A | 232.24 | 233.24 | SH 160 at SH 285 | 19,092 | 192 | 40 | 0 | 01/01/99 | 12/31/01 | SB double lefts, modify geometry, restrict SB and EB lefts | 1.14 | $ 650,000 |
| 6 | 6 | H | 291.29 | 291.31 | SH 6 at 48th | 20,659 | 25 | 16 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.08 | $ 210,000 |
| 6 | 7 | D | 64.06 | 64.18 | SH 7 at Couty Line Road/Flagg Drive | 17,506 | 19 | 4 | 1 | 01/01/99 | 12/31/03 | Install new traffic signals and geometric improvements | 2.00 | $ 600,000 |
| 6 | 25 | A | 222.37 | 223.37 | I-25 at SH 128 SB on-ramp | 94,160 | 134 | 43 | 1 | 01/01/01 | 12/31/03 | Install ramp meter | 2.10 | $ 130,000 |
| 6 | 26 | A | 12.92 | 14.10 | SH26B @ Clay, Zuni, Yuma, Tejon, Pecos, Navajo, Lipan, Jason, I-25 | 36,054 | 280 | 112 | 0 | 01/01/96 | 12/31/98 | Upgrade Traffic Signals and Ped Signals | 1.42 | $ 1,575,000 |
| 6 | 26 | B | 13.19 | 13.21 | SH 26 at Zuni | 33,044 | 20 | 4 | 2 | 01/01/01 | 12/31/03 | Signal upgrades | 1.96 | $ 208,125 |
| 6 | 26 | B | 13.44 | 13.46 | SH 26 at Tejon | 35,219 | 35 | 14 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.03 | $ 208,125 |
| 6 | 30 | A | 0.91 | 0.92 | SH 30 at Roslyn Street | 50,990 | 39 | 17 | 0 | 01/01/01 | 12/31/03 | Singal upgrades | 1.37 | $ 205,000 |
| 6 | 30 | A | 2.65 | 2.67 | SH 30 at Galena Street | 49,472 | 22 | 18 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.24 | $ 205,000 |
| 6 | 33 | A | 1.30 | 1.58 | SH33A @ 18th, 19th, and 20th Streets | 6,687 | 65 | 19 | 0 | 01/01/96 | 12/31/98 | Upgrade Traffic Signals and Ped Signals | 1.31 | $ 300,000 |
| 6 | 36 | B | 47.00 | 57.00 | SH36 at EB On Ramps | 87,794 | 974 | 330 | 4 | 01/01/01 | 12/31/03 | EB Ramp Metering | 10.83 | $ 450,000 |
| 6 | 36 | B | 49.71 | 50.71 | SH 36 at 104th Avenue (WB on-ramp) | 77,935 | 66 | 25 | 0 | 01/01/01 | 12/31/03 | Install ramp meter | 3.01 | $ 130,000 |
| 6 | 40 | C | 289.00 | 290.50 | Colfax at Youngfield | 24,903 | 161 | 60 | 0 | 01/01/01 | 12/31/03 | Signal upgrades and roadway realignment | 1.07 | $ 800,000 |
| 6 | 40 | C | 290.45 | 290.54 | SH 40 at Quail | 37,200 | 40 | 18 | 0 | 01/01/98 | 12/31/02 | Signal upgrades and left turn lane use signing | 1.17 | $ 180,000 |
| 6 | 40 | C | 293.39 | 293.42 | Colfax at Newland | 30,618 | 19 | 11 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.54 | $ 150,000 |
| 6 | 40 | C | 297.68 | 298.00 | SH40C @ 12th St, Tremont, Delaware, Cherokee, Bannock | 32,295 | 109 | 28 | 0 | 01/01/96 | 12/31/98 | Upgrade Traffic Signals and Ped Signals | 1.11 | $ 500,000 |
| 6 | 40 | C | 299.63 | 299.70 | SH 40 at Josephine | 29,721 | 84 | 18 | 0 | 01/01/98 | 12/31/02 | Signal upgrades | 1.12 | $ 185,000 |
| 6 | 40 | C | 300.59 | 301.96 | SH40C @ Colorado, Cherry, Elm, Glencoe, Hudson,Ivy, Krameria | 29,072 | 241 | 88 | 0 | 01/01/96 | 12/31/98 | Upgrade Traffic Signals and Ped Signals | 1.42 | $ 900,000 |
| 6 | 70 | A | 258.72 | 264.46 | I-70 between SH 40 and SH 58 | 77,471 | 433 | 140 | 4 | 01/01/01 | 12/31/03 | Cable Median Barrier | 4.92 | $ 1,300,000 |
| 6 | 72 | A | 0.23 | 0.33 | SH 72 at 48th Ave | 35,382 | 10 | 5 | 1 | 01/01/01 | 12/31/03 | Upgrade existing span wire signals | 1.52 | $ 400,000 |
| 6 | 76 | A | 11.34 | 11.78 | I-76 and 96th Ave Interchange | 36,764 | 26 | 19 | 0 | 01/01/01 | 12/31/03 | Roundabouts at ramp intersections | 1.32 | $ 2,000,000 |
| 6 | 76 | A | 16.13 | 22.41 | I-76 between Burlington Canal and Bromley lane | 19,591 | 123 | 34 | 2 | 01/01/01 | 12/31/03 | Install median cable guard rail | 2.82 | $ 1,400,000 |
| 6 | 95 | A | 2.46 | 2.56 | SH 95 at Florida | 33,268 | 54 | 20 | 0 | 01/01/98 | 12/31/02 | Signal upgrades | 1.10 | $ 185,000 |
| 6 | 95 | A | 7.04 | 7.05 | SH 95 at 26th Avenue | 37,342 | 21 | 15 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.02 | $ 206,667 |
| 6 | 95 | A | 9.54 | 10.11 | SH 95 between 52nd Ave and 56th Ave | 39,098 | 119 | 78 | 0 | 01/01/01 | 12/31/03 | Contruct median | 1.39 | $ 500,000 |
| 6 | 95 | A | 10.06 | 10.16 | SH 95 @ 56th Ave/Ralston Rd | 44,831 | 45 | 25 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire signals | 1.44 | $ 400,000 |
| 6 | 121 | A | 1.17 | 2.17 | SH 121 at Chatfield Ave | 26,291 | 28 | 19 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire traffic signals | 1.11 | $ 400,000 |
| 6 | 121 | A | 5.76 | 5.86 | SH 121 at Layton Ave | 53,089 | 46 | 33 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire traffic signals | 1.74 | $ 400,000 |
| 6 | 128 | B | 12.17 | 12.27 | SH 128 at SH 287 (120th Ave at Federal Blvd) | 37,726 | 32 | 21 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire signals | 1.26 | $ 400,000 |
| 6 | 177 | A | 1.95 | 2.05 | SH 177 at Arapahoe | 38,490 | 118 | 30 | 0 | 01/01/98 | 12/31/02 | Signal upgrades, luminares, curb and sidewalk work, dilemma zone | 1.55 | $ 380,000 |
| 6 | 270 | A | 2.36 | 4.57 | I-270 from Vasquez to Quebec | 55,520 | 97 | 61 | 2 | 01/01/01 | 12/31/03 | Brifen Median Rail | 8.72 | $ 500,000 |
| 6 | 285 | D | 257.69 | 258.06 | SH 285 SB (WB) from Federal to Lowell Blvd | 65,700 | 233 | 52 | 0 | 01/01/00 | 12/31/04 | Queue Detection System with Blankout Warning Signs for SB (WB) RE Accidents | 2.08 | $ 250,000 |
| 6 | 285 | D | 258.49 | 258.69 | SH 285 at Brady Court | 64,551 | 99 | 30 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire traffic signals | 1.85 | $ 400,000 |
| 6 | 285 | D | 260.25 | 260.35 | SH 285 at Sherman Street | 59,914 | 46 | 22 | 0 | 01/01/01 | 12/31/03 | Upgrade existing span wire signals | 1.29 | $ 400,000 |
| 6 | 285 | D | 263.61 | 263.68 | SH 285 at Holly | 59,274 | 43 | 17 | 0 | 01/01/01 | 12/31/03 | Signal upgrades | 1.51 | $ 205,000 |
| 6 | 287 | C | 289.71 | 289.81 | SH 287 at 80th | 37,772 | 95 | 26 | 1 | 01/01/98 | 12/31/02 | Signal upgrades, luminares, curb and sidewalk work, dilemma zone | 1.32 | $ 350,000 |
| 6 | 391 | A | 5.34 | 5.42 | SH391A (Kipling) at SH6G North Frontage Road | 38,267 | 203 | 76 | 1 | 01/01/96 | 12/31/98 | Upgrade Signals w/New Mast Arms, Signal Heads, Poles, … | 1.33 | $ 175,000 |
| 6 | 391 | A | 6.74 | 6.82 | SH391A (Kipling) at 20th Ave | 35,886 | 114 | 69 | 0 | 01/01/96 | 12/31/98 | Upgrade Signals w/New Mast Arms, Signal Heads, Poles, … | 1.00 | $ 175,000 |
| 6 | 391 | A | 6.76 | 6.77 | Kipling at 20th | 38,190 | 42 | 12 | 1 | 01/01/01 | 12/31/03 | Signal upgrades | 2.37 | $ 350,000 |
| 6 | 470 | A | 5.60 | 5.70 | SB 285 to NB 470 Ramp | 27,239 | 30 | 8 | 0 | 02/20/00 | 03/05/05 | Signing and detection | 1.23 | $ 300,000 |
| 6 | 470 | A | 19.60 | 19.60 | SH 470 at Broadway (North Intersection) | 71,598 | 68 | 18 | 0 | 01/01/02 | 12/31/03 | Upgrade existing span wire signals | 1.98 | $ 400,000 |
| 6 | 470 | A | 19.60 | 19.60 | SH 470 at Broadway (South intersection) | 71,598 | 42 | 12 | 0 | 01/01/02 | 12/31/03 | Upgrade existing span wire signals | 1.32 | $ 400,000 |
| 6 | 13th Avenue | 13th Avenue and Josephine | 31,200 | 56 | 17 | 0 | 01/01/03 | 12/31/05 | Signal upgrades | 1.40 | $ 208,333 | |||
| 6 | Alameda and Harlan | Alameda at Harlan | 32,600 | 34 | 17 | 0 | 01/01/98 | 12/31/02 | Signal upgrades and countdown ped timers | 1.05 | $ 225,000 | |||
| 6 | Union Blvd/4th Ave | Union Blvd and 4th Ave Intersection in Lakewood | 50,000 | 161 | 52 | 0 | 01/01/96 | 12/31/98 | Upgrade Signals w/New Mast Arms, Signal Heads, Poles, … | 1.31 | $ 175,000 | |||
