US Bridges

NM-511 over Gobernador Wash

Fair

San Juan County, New Mexico · 1.1 MI S of JCT Nm 173 · Structure no. 000000000005970

Built
1959
66 years old, rebuilt 2013
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
243 ft
6 main spans
Daily traffic
372
2023 count
Owner
State
State Highway Agency

About this bridge

NM-511 over Gobernador Wash is a concrete continuous stringer/multi-beam or girder carrying NM-511 over Gobernador Wash in San Juan County, New Mexico. It was built in 1959 and reconstructed in 2013, so it is 66 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 372 vehicles a day, roughly 11% of them trucks, projected to reach 505 by 2043. The structure is 243 ft (74 m) long and 26 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

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CarriesNM-511
CrossesGobernador Wash
Location1.1 MI S of JCT Nm 173
RouteState Highway 511
CountySan Juan County
StateNew Mexico
Coordinates36.79557, -107.70684
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.1 US tons
Inventory rating49.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length243 ft (74 m)
Longest span39 ft (12 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2023)
Projected traffic505 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemNo

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$430,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-511 over Gobernador Wash built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2013.

What condition is NM-511 over Gobernador Wash 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 2024.

How much traffic does NM-511 over Gobernador Wash carry?

About 372 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-511 over Gobernador Wash?

The structure is 243 ft (74 m) long with a longest span of 39 ft (12 m) and a deck 26 ft wide.

Who owns NM-511 over Gobernador Wash?

It is owned by the State Highway Agency.