SH 142 Ml over Rito Seco Creek
Costilla County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 142 Ml over Rito Seco Creek in Costilla County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1936, making it 89 years old at the 2025 inventory.
- It carries about 440 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 4 of the 38 inventoried bridges in Costilla County rated good (10.5%); 0 (0.0%) are rated poor.
- 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 → (37.20021, -105.42663)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 36 ft |
| Location | In San Luis |
| NBI structure number | P-15-D |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Costilla County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 160 Ml over Canal | 1970 | 5,000 | Good |
| County Road P.6 over Unnamed Drainage | 2006 | 1,230 | Fair |
| SH 159 Ml over Culebra Creek | 1936 | 800 | Fair |
| C.rd Trinchera over Sangre De Cristo Creek | 1989 | 531 | Fair |
| County Road 21 over Culebra Creek | 1955 | 475 | Fair |
| County Road P over Culebra Eastdale Canal | 1992 | 374 | Fair |
All bridges nearby: Costilla County, CO bridge conditions · every bridge in Costilla County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.