US Bridges

FL-4727 over US-84 Nbl/Sbl

Fair

Santa Fe County, New Mexico · 0.1 MI N of JCT I-25/US84 · Structure no. 000000000007508

Built
1974
51 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
259 ft
4 main spans
Daily traffic
7,607
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FL-4727 over US-84 Nbl/Sbl is a prestressed concrete stringer/multi-beam or girder carrying FL-4727 over US-84 Nbl/Sbl in Santa Fe County, New Mexico. It was built in 1974, so it is 51 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 7,607 vehicles a day, roughly 5% of them trucks, projected to reach 10,345 by 2043. The structure is 259 ft (79 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFL-4727
CrossesUS-84 Nbl/Sbl
Location0.1 MI N of JCT I-25/US84
RouteCity Street 4727
CountySanta Fe County
StateNew Mexico
Coordinates35.63859, -105.95636
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length259 ft (79 m)
Longest span91 ft (27.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,607 (2023)
Projected traffic10,345 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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$735,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FL-4727 over US-84 Nbl/Sbl built?

It was built in 1974, making it 51 years old in 2025.

What condition is FL-4727 over US-84 Nbl/Sbl 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 2024.

How much traffic does FL-4727 over US-84 Nbl/Sbl carry?

About 7,607 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FL-4727 over US-84 Nbl/Sbl?

The structure is 259 ft (79 m) long with a longest span of 91 ft (27.7 m) and a deck 34 ft wide.

Who owns FL-4727 over US-84 Nbl/Sbl?

It is owned by the City or Municipal Highway Agency.