US Bridges

US-84 over Alamogordo Creek

Fair

De Baca County, New Mexico · 17.7 MI N of JCT US-60 · Structure no. 000000000007460

Built
1974
51 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
255 ft
4 main spans
Daily traffic
2,439
2023 count
Owner
State
State Highway Agency

About this bridge

US-84 over Alamogordo Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US-84 over Alamogordo Creek in De Baca County, New Mexico. It was built in 1974, so it is 51 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 2,439 vehicles a day, roughly 17% of them trucks, projected to reach 3,317 by 2043. The structure is 255 ft (77.7 m) long and 47 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS-84
CrossesAlamogordo Creek
Location17.7 MI N of JCT US-60
RouteU.S. Route 84
CountyDe Baca County
StateNew Mexico
Coordinates34.68799, -104.37301
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable 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 spans4
Design loadHS 20
Structure length255 ft (77.7 m)
Longest span63 ft (19.2 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,439 (2023)
Projected traffic3,317 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$880,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-84 over Alamogordo Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is US-84 over Alamogordo 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 August 2023.

How much traffic does US-84 over Alamogordo Creek carry?

About 2,439 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-84 over Alamogordo Creek?

The structure is 255 ft (77.7 m) long with a longest span of 63 ft (19.2 m) and a deck 47 ft wide.

Who owns US-84 over Alamogordo Creek?

It is owned by the State Highway Agency.