US Bridges

LA0505 over Big Creek

Good

Winn Parish, Louisiana · 6.47 MI West of US 167 · Structure no. 086403210106471

Built
1996
29 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
660 ft
33 main spans
Daily traffic
511
2021 count
Owner
State
State Highway Agency

About this bridge

LA0505 over Big Creek is a concrete slab carrying LA0505 over Big Creek in Winn Parish, Louisiana. It was built in 1996, so it is 29 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 511 vehicles a day, roughly 14% of them trucks, projected to reach 562 by 2041. The structure is 660 ft (201.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0505
CrossesBig Creek
Location6.47 MI West of US 167
RouteState Highway 505
Coordinates32.0461, -92.7336
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans33
Design loadHS 20
Structure length660 ft (201.2 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic511 (2021)
Projected traffic562 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0505 over Big Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is LA0505 over Big 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 September 2023.

How much traffic does LA0505 over Big Creek carry?

About 511 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0505 over Big Creek?

The structure is 660 ft (201.2 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0505 over Big Creek?

It is owned by the State Highway Agency.