NM-187 over King Canyon
PoorClosed to trafficSierra County, New Mexico · 6.4 MI N of JCT NM-152 · Structure no. 000000000002503
- Built
- 1933
- 92 years old
- Condition
- Poor
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 201 ft
- 8 main spans
- Daily traffic
- 521
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-187 over King Canyon is a wood or timber stringer/multi-beam or girder carrying NM-187 over King Canyon in Sierra County, New Mexico. It was built in 1933, so it is 92 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.
It carries about 521 vehicles a day, roughly 12% of them trucks, projected to reach 708 by 2043. The structure is 201 ft (61.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 NM-187 over King Canyon built?
It was built in 1933, making it 92 years old in 2025.
What condition is NM-187 over King Canyon in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.
How much traffic does NM-187 over King Canyon carry?
About 521 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is NM-187 over King Canyon?
The structure is 201 ft (61.4 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.
Who owns NM-187 over King Canyon?
It is owned by the State Highway Agency.