US Bridges

US-180 over Rapp Canyon

Fair

Grant County, New Mexico · 0.6 MI W of JCT NM-356 · Structure no. 000000000006327

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
6,759
2023 count
Owner
State
State Highway Agency

About this bridge

US-180 over Rapp Canyon is a concrete culvert carrying US-180 over Rapp Canyon in Grant County, New Mexico. It was built in 1960, so it is 65 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 fair condition with a lowest component rating of 5 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 6,759 vehicles a day, roughly 17% of them trucks, projected to reach 9,192 by 2043. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesUS-180
CrossesRapp Canyon
Location0.6 MI W of JCT NM-356
RouteU.S. Route 180
CountyGrant County
StateNew Mexico
Coordinates32.76325, -108.14654
Functional classRural Principal Arterial - Other

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length29 ft (8.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,759 (2023)
Projected traffic9,192 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-180 over Rapp Canyon built?

It was built in 1960, making it 65 years old in 2025.

What condition is US-180 over Rapp Canyon 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 2023.

How much traffic does US-180 over Rapp Canyon carry?

About 6,759 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-180 over Rapp Canyon?

The structure is 29 ft (8.7 m) long with a longest span of 9 ft (2.7 m).

Who owns US-180 over Rapp Canyon?

It is owned by the State Highway Agency.