County Road GG over Trib. of Surveyor Creek
Washington County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road GG over Trib. of Surveyor Creek in Washington County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 18 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 14 of the 76 inventoried bridges in Washington County rated good (18.4%); 3 (3.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (40.17172, -103.13528)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel deck arch |
| Length | about 20 ft |
| Location | 0.55 Mi N. of Co Rd 41 |
| NBI structure number | WTNGG-41.55 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 76 Ml Wbnd over County Road Q | 1964 | 5,500 | Fair |
| I 76 Ml Ebnd over County Road Q | 1964 | 5,500 | Fair |
| US 34 Ml over Camp Creek | 2000 | 3,300 | Good |
| US 34 Ml over Draw | 2006 | 3,100 | Good |
| US 34 Ml over Surveyor Creek | 1935 | 2,900 | Fair |
| US 6 Ml over Prewitt Res Intake Canal | 1941 | 1,100 | Fair |
All bridges nearby: Washington County, CO bridge conditions · every bridge in Washington County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.