US Bridges

39-041A over Unnamed Waterway

Good

Rio Arriba County, New Mexico · 0.4 MI W of JCT NM-68 · Structure no. 000000000008495

Built
1986
39 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
740
2023 count
Owner
County
County Highway Agency

About this bridge

39-041A over Unnamed Waterway is a concrete culvert carrying 39-041A over Unnamed Waterway in Rio Arriba County, New Mexico. It was built in 1986, so it is 39 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 740 vehicles a day, projected to reach 1,006 by 2043. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Carries39-041A
CrossesUnnamed Waterway
Location0.4 MI W of JCT NM-68
RouteCounty Highway 39041
Coordinates36.09174, -106.05464
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 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 traffic740 (2023)
Projected traffic1,006 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 39-041A over Unnamed Waterway built?

It was built in 1986, making it 39 years old in 2025.

What condition is 39-041A 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 October 2021.

How much traffic does 39-041A over Unnamed Waterway carry?

About 740 vehicles per day (2023 count).

How long is 39-041A over Unnamed Waterway?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns 39-041A over Unnamed Waterway?

It is owned by the County Highway Agency.