US Bridges

31-Z001 over BNSF Railroad

Fair

McKinley County, New Mexico · 0.1 MI N of Nm 118/GALLUP · Structure no. 000000000007500

Built
1976
49 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
152 ft
3 main spans
Daily traffic
1,511
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

31-Z001 over BNSF Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying 31-Z001 over BNSF Railroad in McKinley County, New Mexico. It was built in 1976, so it is 49 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 1,511 vehicles a day, roughly 11% of them trucks, projected to reach 2,054 by 2043. The structure is 152 ft (46.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries31-Z001
CrossesBNSF Railroad
Location0.1 MI N of Nm 118/GALLUP
RouteCity Street 31001
CountyMcKinley County
StateNew Mexico
Coordinates35.51042, -108.81417
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span69 ft (21 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,511 (2023)
Projected traffic2,054 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 31-Z001 over BNSF Railroad built?

It was built in 1976, making it 49 years old in 2025.

What condition is 31-Z001 over BNSF Railroad 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 2023.

How much traffic does 31-Z001 over BNSF Railroad carry?

About 1,511 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is 31-Z001 over BNSF Railroad?

The structure is 152 ft (46.3 m) long with a longest span of 69 ft (21 m) and a deck 31 ft wide.

Who owns 31-Z001 over BNSF Railroad?

It is owned by the City or Municipal Highway Agency.