US Bridges

LA1036 over Spring Branch

Fair

St. Helena Parish, Louisiana · 1.0 M SW of LA 1041 · Structure no. 624608460100631

Built
1980
45 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
601
2021 count
Owner
State
State Highway Agency

About this bridge

LA1036 over Spring Branch is a concrete slab carrying LA1036 over Spring Branch in St. Helena Parish, Louisiana. It was built in 1980, so it is 45 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 601 vehicles a day, roughly 13% of them trucks, projected to reach 661 by 2041. The structure is 120 ft (36.6 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesLA1036
CrossesSpring Branch
Location1.0 M SW of LA 1041
RouteState Highway 1036
CountySt. Helena Parish
StateLouisiana
Coordinates30.65856, -90.7015
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 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 width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic601 (2021)
Projected traffic661 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 LA1036 over Spring Branch built?

It was built in 1980, making it 45 years old in 2025.

What condition is LA1036 over Spring Branch 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 November 2024.

How much traffic does LA1036 over Spring Branch carry?

About 601 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA1036 over Spring Branch?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns LA1036 over Spring Branch?

It is owned by the State Highway Agency.