US Bridges

US-64 over Unnamed Waterway

Good

San Juan County, New Mexico · 9.1 MI E of JCT US 550 · Structure no. 000000000005586

Built
1952
73 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
28 ft
2 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 1952, so it is 73 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,727 vehicles a day, roughly 11% of them trucks, projected to reach 3,708 by 2043. The structure is 28 ft (8.5 m) long.

CarriesUS-64
CrossesUnnamed Waterway
Location9.1 MI E of JCT US 550
RouteU.S. Route 64
Coordinates36.7219, -107.8313
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span10 ft (3 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 closed—
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$300,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US-64 over Unnamed Waterway built?

It was built in 1952, making it 73 years old in 2025.

What condition is US-64 over Unnamed Waterway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 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 28 ft (8.5 m) long with a longest span of 10 ft (3 m).

Who owns US-64 over Unnamed Waterway?

It is owned by the State Highway Agency.