US Bridges

FL-4079 over Blacks Arroyo

Fair

Bernalillo County, New Mexico · 1.9 MI N JCT Paradis/Golf · Structure no. 000000000008652

Built
1986
39 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
31 ft
1 main span
Daily traffic
20,587
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-4079 over Blacks Arroyo is a concrete culvert carrying FL-4079 over Blacks Arroyo in Bernalillo County, New Mexico. It was built in 1986, so it is 39 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 20,587 vehicles a day, roughly 5% of them trucks, projected to reach 27,998 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFL-4079
CrossesBlacks Arroyo
Location1.9 MI N JCT Paradis/Golf
RouteCity Street 4079
CountyBernalillo County
StateNew Mexico
Coordinates35.21426, -106.67664
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,587 (2023)
Projected traffic27,998 by 2043
Trucks5%
Lanes on structure4
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-4079 over Blacks Arroyo built?

It was built in 1986, making it 39 years old in 2025.

What condition is FL-4079 over Blacks 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 August 2023.

How much traffic does FL-4079 over Blacks Arroyo carry?

About 20,587 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FL-4079 over Blacks Arroyo?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m).

Who owns FL-4079 over Blacks Arroyo?

It is owned by the City or Municipal Highway Agency.