US Bridges

NM-434 over Mora River

Good

Mora County, New Mexico · 0.1 MI N of NM-518/MORA · Structure no. 000000000009821

Built
2019
6 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
48 ft
2 main spans
Daily traffic
1,223
2019 count
Owner
State
State Highway Agency

About this bridge

NM-434 over Mora River is a prestressed concrete continuous box beam or girders - multiple carrying NM-434 over Mora River in Mora County, New Mexico. It was built in 2019, so it is 6 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 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 1,223 vehicles a day, roughly 6% of them trucks, projected to reach 1,567 by 2039. The structure is 48 ft (14.6 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNM-434
CrossesMora River
Location0.1 MI N of NM-518/MORA
RouteState Highway 434
Coordinates35.97528, -105.32966
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating74 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length48 ft (14.6 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,223 (2019)
Projected traffic1,567 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$500,000 (2070 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-434 over Mora River built?

It was built in 2019, making it 6 years old in 2025.

What condition is NM-434 over Mora River 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 August 2024.

How much traffic does NM-434 over Mora River carry?

About 1,223 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is NM-434 over Mora River?

The structure is 48 ft (14.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns NM-434 over Mora River?

It is owned by the State Highway Agency.