US Bridges

FL-6604 over Arroyo Las Calabacitas

Good

Bernalillo County, New Mexico · 1.1 MI W of Unser Blvd · Structure no. 000000000009403

Built
2006
19 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
203 ft
3 main spans
Daily traffic
10,256
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-6604 over Arroyo Las Calabacitas is a prestressed concrete continuous stringer/multi-beam or girder carrying FL-6604 over Arroyo Las Calabacitas in Bernalillo County, New Mexico. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,256 vehicles a day, roughly 6% of them trucks, projected to reach 13,948 by 2043. The structure is 203 ft (61.9 m) long and 97 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFL-6604
CrossesArroyo Las Calabacitas
Location1.1 MI W of Unser Blvd
RouteCity Street 6604
Coordinates35.21292, -106.71954
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length203 ft (61.9 m)
Longest span119 ft (36.3 m)
Deck width97 ft (29.6 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,256 (2023)
Projected traffic13,948 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-6604 over Arroyo Las Calabacitas built?

It was built in 2006, making it 19 years old in 2025.

What condition is FL-6604 over Arroyo Las Calabacitas 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 February 2025.

How much traffic does FL-6604 over Arroyo Las Calabacitas carry?

About 10,256 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is FL-6604 over Arroyo Las Calabacitas?

The structure is 203 ft (61.9 m) long with a longest span of 119 ft (36.3 m) and a deck 97 ft wide.

Who owns FL-6604 over Arroyo Las Calabacitas?

It is owned by the City or Municipal Highway Agency.