Bridge conditions in Arapahoe County, Colorado
392 inventoried bridges · 21 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
21 of the 392 bridges the federal inventory lists in Arapahoe County are rated poor; the rest split 104 good and 267 fair.
- 21 of the 392 bridges in Arapahoe County, Colorado, are rated in poor condition (5.4%) in the 2025 National Bridge Inventory, as of .
- 104 bridges (26.5%) are rated good and 267 (68.1%) fair.
- The median Arapahoe County bridge was built in 1986.
- The busiest poor-rated bridge is US 285 Ml over Little Dry Creek (built 1955), carrying about 46,000 vehicles a day.
Good 26.5% · Fair 68.1% · Poor 5.4% of 392 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 |
|---|---|---|---|
| US 285 Ml over Little Dry Creek | 1955 | 46,000 | Poor |
| Broadway over Little Dry Creek | 1935 | 31,496 | Poor |
| SH 177 Ml over Little Dry Creek | 1965 | 29,000 | Poor |
| SH 88 Ml over Bear Creek | 1966 | 21,000 | Poor |
| Alameda Ave over I 225 Ml | 1969 | 20,060 | Poor |
| I 70 Ml Wbnd over US 40 Frontage Rd | 1965 | 10,527 | Poor |
| Orchard Rd over Highline Canal | 1965 | 10,077 | Poor |
| I 70 Ml Ebnd over US 40 Frontage Road | 1965 | 9,839 | Poor |
| I 70 Ml Wbnd over County Road 201 | 1964 | 6,000 | Poor |
| I 70 Ml Ebnd over County Road 201 | 1964 | 6,000 | Poor |
| I 70 Ml Ebnd over I 70 Buss Rt | 1965 | 6,000 | Poor |
| I 70 Ml Wbnd over County Road 197 | 1964 | 6,000 | Poor |
| I 70 Ml Ebnd over County Road 197 | 1964 | 6,000 | Poor |
| I 70 Strasburg Spu over UP RR | 1962 | 4,400 | Poor |
| Colorado Blvd over Little Dry Creek | 1970 | 4,036 | Poor |
| Dry Creek Rd over Willow Creek | 1972 | 3,964 | Poor |
| US 36 Ml over Draw | 1931 | 3,400 | Poor |
| County Road 137/N. over I 70 Ml | 1959 | 2,326 | Poor |
| I 70 Service Rd over Rattlesnake Creek SR | 1931 | 383 | Poor |
| US 40 Ml over East Bijou Creek | 1966 | 330 | Poor |
| Windermere St over Highline Canal | 1964 | 299 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 25 Ml over SH 88 Ml W./belleview | 1958 | 246,000 | Fair |
| I 25 Ml over Orchard Road | 1958 | 233,000 | Fair |
| I 25 Ml over Dry Creek Rd | 1987 | 212,000 | Fair |
| I 25 Ml over SH 88 Ml East | 2017 | 212,000 | Good |
| I 25 Ml over County Line Road | 1958 | 171,000 | Fair |
| I 225 Ml over Tollgate Creek | 1965 | 140,000 | Good |
| I 225 Ml over 13TH Ave Bike Path/lrt | 1986 | 140,000 | Fair |
| I 225 Ml over US 40 Ml | 1988 | 140,000 | Good |
| I 225 Ramp over Pedestrian Underpass | 2003 | 136,000 | Fair |
| Ramp to I225 SB over I 225 Ml | 2000 | 132,000 | Good |
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.