US Bridges

US-64 over Unnamed Waterway

Fair

San Juan County, New Mexico · 2.95 MI E of JCT US 550/6 · Structure no. 000000000010042

Built
1992
33 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
64 ft
7 main spans
Daily traffic
2,727
2023 count
Owner
State
State Highway Agency

About this bridge

US-64 over Unnamed Waterway is a concrete culvert carrying US-64 over Unnamed Waterway in San Juan County, New Mexico. It was built in 1992, so it is 33 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 2,727 vehicles a day, roughly 11% of them trucks, projected to reach 3,708 by 2043. The structure is 64 ft (19.4 m) long. If it were closed, the detour would be 29.8 mi (48 km).

CarriesUS-64
CrossesUnnamed Waterway
Location2.95 MI E of JCT US 550/6
RouteU.S. Route 64
Coordinates36.71517, -107.92708
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length64 ft (19.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,727 (2023)
Projected traffic3,708 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-64 over Unnamed Waterway built?

It was built in 1992, making it 33 years old in 2025.

What condition is US-64 over Unnamed Waterway 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 2024.

How much traffic does US-64 over Unnamed Waterway carry?

About 2,727 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-64 over Unnamed Waterway?

The structure is 64 ft (19.4 m) long with a longest span of 8 ft (2.4 m).

Who owns US-64 over Unnamed Waterway?

It is owned by the State Highway Agency.