US Bridges

US-56 over Perico Creek

Fair

Union County, New Mexico · 3.6 MI West of Clayton · Structure no. 000000000007792

Built
1979
46 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
256 ft
4 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

US-56 over Perico Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US-56 over Perico Creek in Union County, New Mexico. It was built in 1979, so it is 46 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 500 vehicles a day, roughly 12% of them trucks, projected to reach 680 by 2043. The structure is 256 ft (78 m) long and 47 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-56
CrossesPerico Creek
Location3.6 MI West of Clayton
RouteU.S. Route 56
Coordinates36.42861, -103.23847
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length256 ft (78 m)
Longest span64 ft (19.5 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic680 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-56 over Perico Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is US-56 over Perico 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 January 2025.

How much traffic does US-56 over Perico Creek carry?

About 500 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US-56 over Perico Creek?

The structure is 256 ft (78 m) long with a longest span of 64 ft (19.5 m) and a deck 47 ft wide.

Who owns US-56 over Perico Creek?

It is owned by the State Highway Agency.