US Bridges

FL-4807 over Arroyo De Las Mascaras

Fair

Santa Fe County, New Mexico · 0.40 M E of ST Francis/Sf · Structure no. 000000000007402

Built
1972
53 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
319
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-4807 over Arroyo De Las Mascaras is a concrete culvert carrying FL-4807 over Arroyo De Las Mascaras in Santa Fe County, New Mexico. It was built in 1972, so it is 53 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 319 vehicles a day, projected to reach 433 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFL-4807
CrossesArroyo De Las Mascaras
Location0.40 M E of ST Francis/Sf
RouteCity Street 4807
CountySanta Fe County
StateNew Mexico
Coordinates35.69258, -105.94221
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
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 rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 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 traffic319 (2023)
Projected traffic433 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$300,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FL-4807 over Arroyo De Las Mascaras built?

It was built in 1972, making it 53 years old in 2025.

What condition is FL-4807 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 June 2021.

How much traffic does FL-4807 over Arroyo De Las Mascaras carry?

About 319 vehicles per day (2023 count).

How long is FL-4807 over Arroyo De Las Mascaras?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns FL-4807 over Arroyo De Las Mascaras?

It is owned by the City or Municipal Highway Agency.