US Bridges

Flowers RD over Darbonne Bayou

Good

Lincoln Parish, Louisiana · 1.2 MI SW of US 167 · Structure no. 053132407924041

Built
2001
24 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
171 ft
9 main spans
Daily traffic
70
2016 count
Owner
County
County Highway Agency

About this bridge

Flowers RD over Darbonne Bayou is a concrete slab carrying Flowers RD over Darbonne Bayou in Lincoln Parish, Louisiana. It was built in 2001, so it is 24 years old, younger than the Louisiana average of 43 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 70 vehicles a day, projected to reach 77 by 2036. The structure is 171 ft (52.1 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFlowers RD
CrossesDarbonne Bayou
Location1.2 MI SW of US 167
RouteCounty Highway 0
Coordinates32.67999, -92.67383
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length171 ft (52.1 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2016)
Projected traffic77 by 2036
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Flowers RD over Darbonne Bayou built?

It was built in 2001, making it 24 years old in 2025.

What condition is Flowers RD over Darbonne Bayou 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 October 2023.

How much traffic does Flowers RD over Darbonne Bayou carry?

About 70 vehicles per day (2016 count).

How long is Flowers RD over Darbonne Bayou?

The structure is 171 ft (52.1 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Flowers RD over Darbonne Bayou?

It is owned by the County Highway Agency.