US Bridges

NM-518 over Mora River

Good

Mora County, New Mexico · 7.3 MI N Mora/San Miguel · Structure no. 000000000009838

Built
2021
4 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
95 ft
1 main span
Daily traffic
1,684
2021 count
Owner
State
State Highway Agency

About this bridge

NM-518 over Mora River is a prestressed concrete stringer/multi-beam or girder carrying NM-518 over Mora River in Mora County, New Mexico. It was built in 2021, so it is 4 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 1,684 vehicles a day, roughly 16% of them trucks, projected to reach 2,290 by 2041. The structure is 95 ft (29 m) long and 43 ft wide. If it were closed, the detour would be 67.7 mi (109 km).

CarriesNM-518
CrossesMora River
Location7.3 MI N Mora/San Miguel
RouteState Highway 518
Coordinates35.94037, -105.25006
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110.1 US tons
Inventory rating51.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (29 m)
Longest span95 ft (29 m)
Deck width43 ft (13.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,684 (2021)
Projected traffic2,290 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed67.7 mi (109 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$356,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-518 over Mora River built?

It was built in 2021, making it 4 years old in 2025.

What condition is NM-518 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 June 2023.

How much traffic does NM-518 over Mora River carry?

About 1,684 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is NM-518 over Mora River?

The structure is 95 ft (29 m) long with a longest span of 95 ft (29 m) and a deck 43 ft wide.

Who owns NM-518 over Mora River?

It is owned by the State Highway Agency.