US Bridges

LA0577 over Deer Creek

Good

Franklin Parish, Louisiana · 1.60 M E of LA 15 · Structure no. 582103440107421

Built
1985
40 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
977
2021 count
Owner
State
State Highway Agency

About this bridge

LA0577 over Deer Creek is a concrete slab carrying LA0577 over Deer Creek in Franklin Parish, Louisiana. It was built in 1985, so it is 40 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 977 vehicles a day, roughly 21% of them trucks, projected to reach 1,074 by 2041. The structure is 76 ft (23.2 m) long and 35 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesLA0577
CrossesDeer Creek
Location1.60 M E of LA 15
RouteState Highway 577
Coordinates32.24513, -91.6157
Functional classRural Major 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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic977 (2021)
Projected traffic1,074 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 LA0577 over Deer Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is LA0577 over Deer 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 October 2024.

How much traffic does LA0577 over Deer Creek carry?

About 977 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0577 over Deer Creek?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0577 over Deer Creek?

It is owned by the State Highway Agency.