US Bridges

FL-4727 over Arroyo Chamisos

Good

Santa Fe County, New Mexico · 0.4 M E of Nm 14 · Structure no. 000000000008482

Built
1985
40 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
79 ft
6 main spans
Daily traffic
23,634
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-4727 over Arroyo Chamisos is a concrete culvert carrying FL-4727 over Arroyo Chamisos in Santa Fe County, New Mexico. It was built in 1985, so it is 40 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 23,634 vehicles a day, roughly 13% of them trucks, projected to reach 32,142 by 2043. The structure is 79 ft (24 m) long.

CarriesFL-4727
CrossesArroyo Chamisos
Location0.4 M E of Nm 14
RouteCity Street 4727
Coordinates35.63875, -106.00995
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length79 ft (24 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,634 (2023)
Projected traffic32,142 by 2043
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$522,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FL-4727 over Arroyo Chamisos built?

It was built in 1985, making it 40 years old in 2025.

What condition is FL-4727 over Arroyo Chamisos 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 April 2024.

How much traffic does FL-4727 over Arroyo Chamisos carry?

About 23,634 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is FL-4727 over Arroyo Chamisos?

The structure is 79 ft (24 m) long with a longest span of 12 ft (3.7 m).

Who owns FL-4727 over Arroyo Chamisos?

It is owned by the City or Municipal Highway Agency.