US Bridges

Range Road over Flat River

FairPosted for load

Bossier Parish, Louisiana · 1.9 MI E. of Lindburg RD · Structure no. AFLAAWUB07115

Built
1951
74 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
114 ft
4 main spans
Daily traffic
2,000
2016 count
Owner
Federal
Air Force

About this bridge

Range Road over Flat River is a concrete tee beam carrying Range Road over Flat River in Bossier Parish, Louisiana. It was built in 1951, so it is 74 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,000 vehicles a day, projected to reach 2,400 by 2036. The structure is 114 ft (34.7 m) long and 33 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesRange Road
CrossesFlat River
Location1.9 MI E. of Lindburg RD
CountyBossier Parish
StateLouisiana
Coordinates32.51803, -93.63422
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length114 ft (34.7 m)
Longest span29 ft (8.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2016)
Projected traffic2,400 by 2036
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerAir Force
Maintained byAir Force
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Range Road over Flat River built?

It was built in 1951, making it 74 years old in 2025.

What condition is Range Road over Flat 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 November 2024.

How much traffic does Range Road over Flat River carry?

About 2,000 vehicles per day (2016 count).

How long is Range Road over Flat River?

The structure is 114 ft (34.7 m) long with a longest span of 29 ft (8.7 m) and a deck 33 ft wide.

Who owns Range Road over Flat River?

It is owned by the Air Force.