US Bridges

FL-4805 over Arroyo De Las Mascaras

Fair

Santa Fe County, New Mexico · 0.01 MI W of ST Francis · Structure no. 000000000006526

Built
1963
62 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
89 ft
7 main spans
Daily traffic
8,793
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-4805 over Arroyo De Las Mascaras is a concrete culvert carrying FL-4805 over Arroyo De Las Mascaras in Santa Fe County, New Mexico. It was built in 1963, so it is 62 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 8,793 vehicles a day, roughly 5% of them trucks, projected to reach 11,958 by 2043. The structure is 89 ft (27 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFL-4805
CrossesArroyo De Las Mascaras
Location0.01 MI W of ST Francis
RouteCity Street 4805
CountySanta Fe County
StateNew Mexico
Coordinates35.68867, -105.95521
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 inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length89 ft (27 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,793 (2023)
Projected traffic11,958 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-4805 over Arroyo De Las Mascaras built?

It was built in 1963, making it 62 years old in 2025.

What condition is FL-4805 over Arroyo De Las Mascaras 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 February 2023.

How much traffic does FL-4805 over Arroyo De Las Mascaras carry?

About 8,793 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FL-4805 over Arroyo De Las Mascaras?

The structure is 89 ft (27 m) long with a longest span of 10 ft (3 m).

Who owns FL-4805 over Arroyo De Las Mascaras?

It is owned by the City or Municipal Highway Agency.