US Bridges

LA0021 over Bogalusa Creek

Good

Washington Parish, Louisiana · LA0021 · Structure no. 625900300308481

Built
1966
59 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Concrete
Length
680 ft
17 main spans
Daily traffic
8,154
2021 count
Owner
State
State Highway Agency

About this bridge

LA0021 over Bogalusa Creek is a concrete tee beam carrying LA0021 over Bogalusa Creek in Washington Parish, Louisiana. It was built in 1966, so it is 59 years old, older 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 8,154 vehicles a day, roughly 6% of them trucks, projected to reach 8,969 by 2041. The structure is 680 ft (207.3 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0021
CrossesBogalusa Creek
LocationLA0021
RouteState Highway 21
Coordinates30.78059, -89.8523
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length680 ft (207.3 m)
Longest span40 ft (12.2 m)
Deck width62 ft (18.8 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,154 (2021)
Projected traffic8,969 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 LA0021 over Bogalusa Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is LA0021 over Bogalusa Creek 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 June 2024.

How much traffic does LA0021 over Bogalusa Creek carry?

About 8,154 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is LA0021 over Bogalusa Creek?

The structure is 680 ft (207.3 m) long with a longest span of 40 ft (12.2 m) and a deck 62 ft wide.

Who owns LA0021 over Bogalusa Creek?

It is owned by the State Highway Agency.