US Bridges

US 64/87WB over Seneca Creek

Fair

Union County, New Mexico · 4.41 West of Nm 453 · Structure no. 000000000009363

Built
2009
16 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
4,134
2023 count
Owner
State
State Highway Agency

About this bridge

US 64/87WB over Seneca Creek is a concrete continuous slab carrying US 64/87WB over Seneca Creek in Union County, New Mexico. It was built in 2009, so it is 16 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 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 4,134 vehicles a day, roughly 17% of them trucks, projected to reach 5,622 by 2043. The structure is 150 ft (45.7 m) long and 36 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesUS 64/87WB
CrossesSeneca Creek
Location4.41 West of Nm 453
RouteU.S. Route 64
CountyUnion County
StateNew Mexico
Coordinates36.61522, -103.68568
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating54.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHL 93
Structure length150 ft (45.7 m)
Longest span33 ft (10.1 m)
Deck width36 ft (10.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic4,134 (2023)
Projected traffic5,622 by 2043
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 64/87WB over Seneca Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is US 64/87WB over Seneca 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 64/87WB over Seneca Creek carry?

About 4,134 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 64/87WB over Seneca Creek?

The structure is 150 ft (45.7 m) long with a longest span of 33 ft (10.1 m) and a deck 36 ft wide.

Who owns US 64/87WB over Seneca Creek?

It is owned by the State Highway Agency.