US Bridges

FL-5121 over North Hahn Arroyo

Fair

Bernalillo County, New Mexico · 0.2 MI S Montgomery Blvd · Structure no. 000000000008279

Built
1965
60 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
43 ft
2 main spans
Daily traffic
328
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-5121 over North Hahn Arroyo is a concrete continuous slab carrying FL-5121 over North Hahn Arroyo in Bernalillo County, New Mexico. It was built in 1965, so it is 60 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 5 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 328 vehicles a day, projected to reach 446 by 2043. The structure is 43 ft (13.1 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFL-5121
CrossesNorth Hahn Arroyo
Location0.2 MI S Montgomery Blvd
RouteCity Street 5121
CountyBernalillo County
StateNew Mexico
Coordinates35.12751, -106.56338
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic328 (2023)
Projected traffic446 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 FL-5121 over North Hahn Arroyo built?

It was built in 1965, making it 60 years old in 2025.

What condition is FL-5121 over North Hahn Arroyo 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 November 2023.

How much traffic does FL-5121 over North Hahn Arroyo carry?

About 328 vehicles per day (2023 count).

How long is FL-5121 over North Hahn Arroyo?

The structure is 43 ft (13.1 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns FL-5121 over North Hahn Arroyo?

It is owned by the City or Municipal Highway Agency.