NM-456 over Cimarron River
GoodUnion County, New Mexico · 0.1 MI NE of JCT NM-325 · Structure no. 000000000001091
- Built
- 1936
- 89 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 77 ft
- 1 main span
- Daily traffic
- 146
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-456 over Cimarron River is a steel stringer/multi-beam or girder carrying NM-456 over Cimarron River in Union County, New Mexico. It was built in 1936, so it is 89 years old, older than the New Mexico average of 51.5 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 146 vehicles a day, roughly 11% of them trucks, projected to reach 198 by 2043. The structure is 77 ft (23.5 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NM-456 over Cimarron River built?
It was built in 1936, making it 89 years old in 2025.
What condition is NM-456 over Cimarron River 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 April 2023.
How much traffic does NM-456 over Cimarron River carry?
About 146 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is NM-456 over Cimarron River?
The structure is 77 ft (23.5 m) long with a longest span of 72 ft (21.9 m) and a deck 32 ft wide.
Who owns NM-456 over Cimarron River?
It is owned by the State Highway Agency.