US Bridges

31-0004 over Big House Canyon

Good

McKinley County, New Mexico · 3.55 MI S of S Frntge RD · Structure no. 000000000010122

Built
2022
3 years old
Condition
Good
inspected July 2024
Type
Culvert
Steel
Length
187 ft
1 main span
Daily traffic
143
2020 count
Owner
County
County Highway Agency

About this bridge

31-0004 over Big House Canyon is a steel culvert carrying 31-0004 over Big House Canyon in McKinley County, New Mexico. It was built in 2022, so it is 3 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 143 vehicles a day, roughly 15% of them trucks, projected to reach 267 by 2040. The structure is 187 ft (56.9 m) long and 24 ft wide.

Carries31-0004
CrossesBig House Canyon
Location3.55 MI S of S Frntge RD
RouteCounty Highway 31004
Coordinates35.37598, -108.95103
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length187 ft (56.9 m)
Longest span20 ft (6.2 m)
Deck width24 ft (7.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143 (2020)
Projected traffic267 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$493,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 31-0004 over Big House Canyon built?

It was built in 2022, making it 3 years old in 2025.

What condition is 31-0004 over Big House Canyon 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 July 2024.

How much traffic does 31-0004 over Big House Canyon carry?

About 143 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is 31-0004 over Big House Canyon?

The structure is 187 ft (56.9 m) long with a longest span of 20 ft (6.2 m) and a deck 24 ft wide.

Who owns 31-0004 over Big House Canyon?

It is owned by the County Highway Agency.