US Bridges

LA0450 over Snell Branch

Good

Washington Parish, Louisiana · LA0450 · Structure no. 625908591703011

Built
1957
68 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
319
2021 count
Owner
State
State Highway Agency

About this bridge

LA0450 over Snell Branch is a concrete slab carrying LA0450 over Snell Branch in Washington Parish, Louisiana. It was built in 1957, so it is 68 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 319 vehicles a day, roughly 13% of them trucks, projected to reach 350 by 2041. The structure is 120 ft (36.6 m) long and 29 ft wide.

CarriesLA0450
CrossesSnell Branch
LocationLA0450
RouteState Highway 450
Coordinates30.99454, -90.3345
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic319 (2021)
Projected traffic350 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 LA0450 over Snell Branch built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0450 over Snell Branch 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 July 2024.

How much traffic does LA0450 over Snell Branch carry?

About 319 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0450 over Snell Branch?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0450 over Snell Branch?

It is owned by the State Highway Agency.