Bridge conditions in Douglas County, Colorado
264 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
6 of the 264 bridges the federal inventory lists in Douglas County are rated poor; the rest split 139 good and 119 fair.
- 6 of the 264 bridges in Douglas County, Colorado, are rated in poor condition (2.3%) in the 2025 National Bridge Inventory, as of .
- 139 bridges (52.7%) are rated good and 119 (45.1%) fair.
- The median Douglas County bridge was built in 1996.
- The busiest poor-rated bridge is Plum Creek Parkway over Sellars Gulch (built 1987), carrying about 14,950 vehicles a day.
Good 52.7% · Fair 45.1% · Poor 2.3% of 264 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Plum Creek Parkway over Sellars Gulch | 1987 | 14,950 | Poor |
| Happy Canyon Road over I 25 Ml | 1965 | 6,760 | Poor |
| Rampart Range Road over Little Willow Creek | 1985 | 5,248 | Poor |
| SH 83 Ml over West Cherry Creek | 1968 | 4,400 | Poor |
| CR107 (Liggett RD) over I 25 Ml | 1964 | 3,395 | Poor |
| SH 105 Ml over Draw | 1938 | 2,600 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 25 Ml over Happy Canyon Creek | 1999 | 116,000 | Fair |
| I 25 Ml over Ridgegate Pkwy | 2008 | 116,000 | Fair |
| I 25 Ml over Clydesdale Ln | 1999 | 116,000 | Fair |
| SH 470 Ml over Willow Creek | 1984 | 95,000 | Fair |
| I 25 Nbnd Ramp over Ramp to County Line Rd R | 1983 | 85,500 | Fair |
| C470 EB Ramp to 25 over Lrt | 2005 | 85,500 | Fair |
| Wolfensberger Rd over East Plum Creek | 2003 | 82,000 | Fair |
| SH 470 Ml over Highline Canal | 1984 | 81,000 | Good |
| US 85 to C470 Ramp over Erickson Blvd. | 2012 | 81,000 | Good |
| C470 EB Ramp to 25 over I 25 SH 470 Ml R | 1985 | 80,000 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Colorado: Colorado bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.