US Bridges

FL-7100 over Red River

Fair

Taos County, New Mexico · 0.1 MI S NM-38/RED River · Structure no. 000000000007647

Built
1959
66 years old, rebuilt 1976
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

FL-7100 over Red River is a concrete tee beam carrying FL-7100 over Red River in Taos County, New Mexico. It was built in 1959 and reconstructed in 1976, so it is 66 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 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 250 vehicles a day, projected to reach 340 by 2043. The structure is 31 ft (9.5 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFL-7100
CrossesRed River
Location0.1 MI S NM-38/RED River
RouteCounty Highway 7100
CountyTaos County
StateNew Mexico
Coordinates36.70934, -105.40997
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic340 by 2043
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty 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$50,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FL-7100 over Red River built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1976.

What condition is FL-7100 over Red 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 September 2023.

How much traffic does FL-7100 over Red River carry?

About 250 vehicles per day (2023 count).

How long is FL-7100 over Red River?

The structure is 31 ft (9.5 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns FL-7100 over Red River?

It is owned by the County Highway Agency.