US-491 over Salt Creek
FairSan Juan County, New Mexico · 3.0 MI N of JCT US-64 · Structure no. 000000000007480
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 211 ft
- 3 main spans
- Daily traffic
- 4,224
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-491 over Salt Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US-491 over Salt Creek in San Juan County, New Mexico. It was built in 1974, so it is 51 years old, younger than the New Mexico average of 51.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 4,224 vehicles a day, roughly 17% of them trucks, projected to reach 5,744 by 2043. The structure is 211 ft (64.2 m) long and 48 ft wide. If it were closed, the detour would be 65.2 mi (105 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-491 over Salt Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is US-491 over Salt Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.
How much traffic does US-491 over Salt Creek carry?
About 4,224 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-491 over Salt Creek?
The structure is 211 ft (64.2 m) long with a longest span of 70 ft (21.3 m) and a deck 48 ft wide.
Who owns US-491 over Salt Creek?
It is owned by the State Highway Agency.