US Bridges

LA0004 over Crew Bayou

Fair

Caldwell Parish, Louisiana · 2.7 MI East of LA 559 · Structure no. 581100360107471

Built
1957
68 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
1,558
2021 count
Owner
State
State Highway Agency

About this bridge

LA0004 over Crew Bayou is a concrete slab carrying LA0004 over Crew Bayou in Caldwell Parish, Louisiana. It was built in 1957, so it is 68 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 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 1,558 vehicles a day, roughly 21% of them trucks, projected to reach 1,713 by 2041. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesLA0004
CrossesCrew Bayou
Location2.7 MI East of LA 559
RouteState Highway 4
CountyCaldwell Parish
StateLouisiana
Coordinates32.07704, -91.9763
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment7: Better than present minimum criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,558 (2021)
Projected traffic1,713 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0004 over Crew Bayou built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0004 over Crew 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 December 2024.

How much traffic does LA0004 over Crew Bayou carry?

About 1,558 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0004 over Crew Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns LA0004 over Crew Bayou?

It is owned by the State Highway Agency.