US Bridges

NM-4 over Jemez River

Fair

Sandoval County, New Mexico · 1.8 MI N of JCT US 550 · Structure no. 000000000008364

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
282 ft
3 main spans
Daily traffic
4,975
2023 count
Owner
State
State Highway Agency

About this bridge

NM-4 over Jemez River is a prestressed concrete continuous stringer/multi-beam or girder carrying NM-4 over Jemez River in Sandoval County, New Mexico. It was built in 1981, so it is 44 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 4,975 vehicles a day, roughly 11% of them trucks, projected to reach 6,766 by 2043. The structure is 282 ft (86.1 m) long and 45 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

Location

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CarriesNM-4
CrossesJemez River
Location1.8 MI N of JCT US 550
RouteState Highway 4
CountySandoval County
StateNew Mexico
Coordinates35.57317, -106.75846
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length282 ft (86.1 m)
Longest span93 ft (28.2 m)
Deck width45 ft (13.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,975 (2023)
Projected traffic6,766 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-4 over Jemez River built?

It was built in 1981, making it 44 years old in 2025.

What condition is NM-4 over Jemez River 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 October 2023.

How much traffic does NM-4 over Jemez River carry?

About 4,975 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-4 over Jemez River?

The structure is 282 ft (86.1 m) long with a longest span of 93 ft (28.2 m) and a deck 45 ft wide.

Who owns NM-4 over Jemez River?

It is owned by the State Highway Agency.