US Bridges

NM-516 over Unnamed Waterway

Fair

San Juan County, New Mexico · 4.3 MI N of JCT US 64 · Structure no. 000000000003665

Built
1937
88 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
53 ft
8 main spans
Daily traffic
29,593
2023 count
Owner
State
State Highway Agency

About this bridge

NM-516 over Unnamed Waterway is a concrete culvert carrying NM-516 over Unnamed Waterway in San Juan County, New Mexico. It was built in 1937, so it is 88 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 fair condition with a lowest component rating of 6 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 29,593 vehicles a day, roughly 13% of them trucks, projected to reach 40,246 by 2043. The structure is 53 ft (16.2 m) long. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesNM-516
CrossesUnnamed Waterway
Location4.3 MI N of JCT US 64
RouteState Highway 516
CountySan Juan County
StateNew Mexico
Coordinates36.76954, -108.14284
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadH 15
Structure length53 ft (16.2 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,593 (2023)
Projected traffic40,246 by 2043
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$467,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-516 over Unnamed Waterway built?

It was built in 1937, making it 88 years old in 2025.

What condition is NM-516 over Unnamed Waterway 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 May 2024.

How much traffic does NM-516 over Unnamed Waterway carry?

About 29,593 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is NM-516 over Unnamed Waterway?

The structure is 53 ft (16.2 m) long with a longest span of 6 ft (1.8 m).

Who owns NM-516 over Unnamed Waterway?

It is owned by the State Highway Agency.