US Bridges

US-64 over Unnamed Waterway

Good

San Juan County, New Mexico · 1.2 MI W of JCT US 550 · Structure no. 000000000006749

Built
1966
59 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
14,648
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 1966, so it is 59 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 14,648 vehicles a day, roughly 13% of them trucks, projected to reach 19,921 by 2043. The structure is 26 ft (8 m) long. If it were closed, the detour would be 19.9 mi (32 km).

CarriesUS-64
CrossesUnnamed Waterway
Location1.2 MI W of JCT US 550
RouteU.S. Route 64
Coordinates36.71121, -108.00569
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (8 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 traffic14,648 (2023)
Projected traffic19,921 by 2043
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 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 1966, making it 59 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 April 2023.

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

About 14,648 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US-64 over Unnamed Waterway?

The structure is 26 ft (8 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.