US Bridges

US-84/285 over Unnamed Waterway

Good

Rio Arriba County, New Mexico · 0.30 MI S JCT US-84/285 · Structure no. 000000000003625

Built
1933
92 years old, rebuilt 2003
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
12,630
2023 count
Owner
State
State Highway Agency

About this bridge

US-84/285 over Unnamed Waterway is a concrete culvert carrying US-84/285 over Unnamed Waterway in Rio Arriba County, New Mexico. It was built in 1933 and reconstructed in 2003, so it is 92 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 12,630 vehicles a day, roughly 16% of them trucks, projected to reach 17,176 by 2043. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 24.2 mi (39 km).

CarriesUS-84/285
CrossesUnnamed Waterway
Location0.30 MI S JCT US-84/285
RouteU.S. Route 84
Coordinates36.06736, -106.12237
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 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 alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
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 traffic12,630 (2023)
Projected traffic17,176 by 2043
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-84/285 over Unnamed Waterway built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 2003.

What condition is US-84/285 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 June 2023.

How much traffic does US-84/285 over Unnamed Waterway carry?

About 12,630 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US-84/285 over Unnamed Waterway?

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

Who owns US-84/285 over Unnamed Waterway?

It is owned by the State Highway Agency.