US Bridges

US-84/285 over Unnamed Waterway

Fair

Rio Arriba County, New Mexico · US 84/285 Mm 193.6 · Structure no. 000000000009169

Built
2002
23 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
37 ft
3 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 2002, so it is 23 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 12,630 vehicles a day, roughly 16% of them trucks, projected to reach 17,176 by 2043. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-84/285
CrossesUnnamed Waterway
LocationUS 84/285 Mm 193.6
RouteU.S. Route 84
Coordinates36.04642, -106.10808
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 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 closed1.2 mi (2 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-84/285 over Unnamed Waterway built?

It was built in 2002, making it 23 years old in 2025.

What condition is US-84/285 over Unnamed Waterway 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 April 2024.

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 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns US-84/285 over Unnamed Waterway?

It is owned by the State Highway Agency.