US Bridges

LA0435 over Drain

Good

St. Tammany Parish, Louisiana · 4.29 Miles East of LA 36 · Structure no. 625200000620253

Built
2010
15 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
4,200
2021 count
Owner
State
State Highway Agency

About this bridge

LA0435 over Drain is a concrete slab carrying LA0435 over Drain in St. Tammany Parish, Louisiana. It was built in 2010, so it is 15 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 4,200 vehicles a day, roughly 12% of them trucks, projected to reach 4,620 by 2041. The structure is 120 ft (36.6 m) long and 42 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesLA0435
CrossesDrain
Location4.29 Miles East of LA 36
RouteState Highway 435
CountySt. Tammany Parish
StateLouisiana
Coordinates30.50594, -89.9783
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59.3 US tons
Inventory rating45.7 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 width42 ft (12.8 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2021)
Projected traffic4,620 by 2041
Trucks12%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0435 over Drain built?

It was built in 2010, making it 15 years old in 2025.

What condition is LA0435 over Drain 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 2023.

How much traffic does LA0435 over Drain carry?

About 4,200 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0435 over Drain?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 42 ft wide.

Who owns LA0435 over Drain?

It is owned by the State Highway Agency.