US Bridges

FL-4685 over North Spring River

Fair

Chaves County, New Mexico · 0.7 M N of US-380/ROSWELL · Structure no. 000000000005291

Built
1953
72 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
40 ft
1 main span
Daily traffic
19,097
2023 count
Owner
State
State Highway Agency

About this bridge

FL-4685 over North Spring River is a concrete frame carrying FL-4685 over North Spring River in Chaves County, New Mexico. It was built in 1953, so it is 72 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 19,097 vehicles a day, roughly 13% of them trucks, projected to reach 25,971 by 2043. The structure is 40 ft (12.2 m) long and 99 ft wide.

Location

Open in Google Maps
CarriesFL-4685
CrossesNorth Spring River
Location0.7 M N of US-380/ROSWELL
RouteCity Street 4685
CountyChaves County
StateNew Mexico
Coordinates33.40392, -104.52271
Functional classUrban Other Principal 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating29.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width99 ft (30.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,097 (2023)
Projected traffic25,971 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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$291,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FL-4685 over North Spring River built?

It was built in 1953, making it 72 years old in 2025.

What condition is FL-4685 over North Spring River 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 May 2024.

How much traffic does FL-4685 over North Spring River carry?

About 19,097 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is FL-4685 over North Spring River?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 99 ft wide.

Who owns FL-4685 over North Spring River?

It is owned by the State Highway Agency.