County Road Z7 over Trinchera Creek
GoodCostilla County, Colorado · 3.0 MI SE of SH 160 · Structure no. CSZ7-S0.2-TRR
- Built
- 1988
- 37 years old, rebuilt 2018
- Condition
- Good
- inspected March 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 124
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
County Road Z7 over Trinchera Creek is a steel stringer/multi-beam or girder carrying County Road Z7 over Trinchera Creek in Costilla County, Colorado. It was built in 1988 and reconstructed in 2018, so it is 37 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 124 vehicles a day, projected to reach 139 by 2042. The structure is 27 ft (8.1 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road Z7 over Trinchera Creek built?
It was built in 1988, making it 37 years old in 2025. It was reconstructed in 2018.
What condition is County Road Z7 over Trinchera Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2025.
How much traffic does County Road Z7 over Trinchera Creek carry?
About 124 vehicles per day (2022 count).
How long is County Road Z7 over Trinchera Creek?
The structure is 27 ft (8.1 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.
Who owns County Road Z7 over Trinchera Creek?
It is owned by the County Highway Agency.