I 70 Service Rd over Rattlesnake Creek SR
Arapahoe County, Colorado · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 70 Service Rd over Rattlesnake Creek SR in Arapahoe County, Colorado, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1931, making it 94 years old at the 2025 inventory.
- It carries about 383 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 21 of the 392 inventoried bridges in Arapahoe County rated poor (5.4%); 21 (5.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, would be posted or closed except for temporary shoring or other temporary measures (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (39.69334, -104.1465)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 244 ft |
| Location | 4.4 Mi E of Jct US 36 (by |
| NBI structure number | F-20-C |
| Condition class | Poor |
| Traffic status (item 41) | Open, would be posted or closed except for temporary shoring or other temporary measures |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Arapahoe 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 |
All bridges nearby: Arapahoe County, CO bridge conditions · every bridge in Arapahoe County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.