US Bridges

Guilbeau Rd. over Coulee

Fair

Lafayette Parish, Louisiana · 0.30 MI NW of US 167 · Structure no. 032830117920381

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
6,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Guilbeau Rd. over Coulee is a concrete culvert carrying Guilbeau Rd. over Coulee in Lafayette Parish, Louisiana. It was built in 1983, so it is 42 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 6,000 vehicles a day, projected to reach 6,600 by 2042. The structure is 26 ft (7.9 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGuilbeau Rd.
CrossesCoulee
Location0.30 MI NW of US 167
RouteCounty Highway 0
CountyLafayette Parish
StateLouisiana
Coordinates30.19556, -92.06299
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width84 ft (25.6 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2022)
Projected traffic6,600 by 2042
Trucks—
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$223,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Guilbeau Rd. over Coulee built?

It was built in 1983, making it 42 years old in 2025.

What condition is Guilbeau Rd. over Coulee 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 October 2023.

How much traffic does Guilbeau Rd. over Coulee carry?

About 6,000 vehicles per day (2022 count).

How long is Guilbeau Rd. over Coulee?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 84 ft wide.

Who owns Guilbeau Rd. over Coulee?

It is owned by the City or Municipal Highway Agency.