US Bridges

IRR BIA RTE N33 over Wash

Fair

San Juan County, New Mexico · 4 MI E NMHWY491 on N36 · Structure no. 00000000000N264

Built
1988
37 years old
Condition
Fair
inspected June 2024
Type
Culvert
Steel
Length
88 ft
5 main spans
Daily traffic
1,711
2022 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N33 over Wash is a steel culvert carrying IRR BIA RTE N33 over Wash in San Juan County, New Mexico. It was built in 1988, so it is 37 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 1,711 vehicles a day, roughly 25% of them trucks, projected to reach 2,574 by 2040. The structure is 88 ft (26.7 m) long and 76 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesIRR BIA RTE N33
CrossesWash
Location4 MI E NMHWY491 on N36
RouteFederal Lands Road 0N36
Coordinates36.71417, -108.63494
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.1 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans5
Design loadHS 20
Structure length88 ft (26.7 m)
Longest span15 ft (4.6 m)
Deck width76 ft (23.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,711 (2022)
Projected traffic2,574 by 2040
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
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 IRR BIA RTE N33 over Wash built?

It was built in 1988, making it 37 years old in 2025.

What condition is IRR BIA RTE N33 over Wash 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 June 2024.

How much traffic does IRR BIA RTE N33 over Wash carry?

About 1,711 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is IRR BIA RTE N33 over Wash?

The structure is 88 ft (26.7 m) long with a longest span of 15 ft (4.6 m) and a deck 76 ft wide.

Who owns IRR BIA RTE N33 over Wash?

It is owned by the Bureau of Indian Affairs.