US Bridges

Bonner RD over Colewa Bayou

Fair

West Carroll Parish, Louisiana · 2.5 MI N of LA 2 · Structure no. 056232487913011

Built
1999
26 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
560
2019 count
Owner
County
County Highway Agency

About this bridge

Bonner RD over Colewa Bayou is a concrete slab carrying Bonner RD over Colewa Bayou in West Carroll Parish, Louisiana. It was built in 1999, so it is 26 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 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 560 vehicles a day, projected to reach 616 by 2039. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesBonner RD
CrossesColewa Bayou
Location2.5 MI N of LA 2
RouteCounty Highway 0
CountyWest Carroll Parish
StateLouisiana
Coordinates32.81283, -91.50211
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length95 ft (29 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 traffic560 (2019)
Projected traffic616 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Bonner RD over Colewa Bayou built?

It was built in 1999, making it 26 years old in 2025.

What condition is Bonner RD over Colewa 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 January 2023.

How much traffic does Bonner RD over Colewa Bayou carry?

About 560 vehicles per day (2019 count).

How long is Bonner RD over Colewa Bayou?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Bonner RD over Colewa Bayou?

It is owned by the County Highway Agency.