US Bridges

US-64 over Shumway Arroyo

Fair

San Juan County, New Mexico · 13.0 MI E of JCT US-491 · Structure no. 000000000007526

Built
1979
46 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
104 ft
2 main spans
Daily traffic
15,364
2023 count
Owner
State
State Highway Agency

About this bridge

US-64 over Shumway Arroyo is a prestressed concrete continuous stringer/multi-beam or girder carrying US-64 over Shumway Arroyo in San Juan 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 15,364 vehicles a day, roughly 17% of them trucks, projected to reach 20,895 by 2043. The structure is 104 ft (31.6 m) long and 105 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-64
CrossesShumway Arroyo
Location13.0 MI E of JCT US-491
RouteU.S. Route 64
Coordinates36.75993, -108.46662
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.3 US tons
Inventory rating39.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length104 ft (31.6 m)
Longest span51 ft (15.5 m)
Deck width105 ft (32 m)
Roadway width102 ft (31.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,364 (2023)
Projected traffic20,895 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$825,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US-64 over Shumway Arroyo built?

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

What condition is US-64 over Shumway Arroyo 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 over Shumway Arroyo carry?

About 15,364 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-64 over Shumway Arroyo?

The structure is 104 ft (31.6 m) long with a longest span of 51 ft (15.5 m) and a deck 105 ft wide.

Who owns US-64 over Shumway Arroyo?

It is owned by the State Highway Agency.