US Bridges

Quail RD over Gilmer Bayou

FairPosted for load

Caddo Parish, Louisiana · 1.3 MI South of LA 511 · Structure no. 040932254935141

Built
1982
43 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
78 ft
4 main spans
Daily traffic
521
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Quail RD over Gilmer Bayou is a concrete slab carrying Quail RD over Gilmer Bayou in Caddo Parish, Louisiana. It was built in 1982, so it is 43 years old, younger 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 521 vehicles a day, projected to reach 573 by 2039. The structure is 78 ft (23.8 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesQuail RD
CrossesGilmer Bayou
Location1.3 MI South of LA 511
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.4237, -93.85629
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width39 ft (12 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic521 (2019)
Projected traffic573 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Quail RD over Gilmer Bayou built?

It was built in 1982, making it 43 years old in 2025.

What condition is Quail RD over Gilmer Bayou 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 April 2023.

How much traffic does Quail RD over Gilmer Bayou carry?

About 521 vehicles per day (2019 count).

How long is Quail RD over Gilmer Bayou?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 39 ft wide.

Who owns Quail RD over Gilmer Bayou?

It is owned by the City or Municipal Highway Agency.