County Road 102 over San Luis Valley Canal
Alamosa County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 102 over San Luis Valley Canal in Alamosa County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1993, making it 32 years old at the 2025 inventory.
- It carries about 33 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 6 of the 15 inventoried bridges in Alamosa County rated good (40.0%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 8 to 9, superstructure 8 to 9, substructure 7 to 8.
- Its most recent inspection on record is dated March 2025, on a 24-month routine inspection cycle.
- 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 → (37.58707, -106.00232)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 9 | Excellent condition |
| Superstructure | 8 | 9 | Excellent condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 49 ft |
| Location | .1 Mi S of CR 1 Mi Lane |
| NBI structure number | 003010215.9009A |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Alamosa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 160 Ml over Rio Grande | 1966 | 13,000 | Fair |
| US 285 Ml over Rock Creek | 1960 | 5,900 | Good |
| State St (CR 650) over Rio Grande River | 1982 | 1,994 | Fair |
| County Road 100 over Empire Canal | 1991 | 1,052 | Fair |
| SH 368 Ml over Alamosa Farm Laterl Cana | 1955 | 230 | Fair |
| SH 368 Ml over Empire Irrigation Canal | 1955 | 230 | Good |
All bridges nearby: Alamosa County, CO bridge conditions · every bridge in Alamosa County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.