US Bridges

LA0778 over West Prong Hemphill Cree

Good

La Salle Parish, Louisiana · 0.30 M W of LA 127 · Structure no. 583008300501081

Built
2001
24 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
1,622
2021 count
Owner
State
State Highway Agency

About this bridge

LA0778 over West Prong Hemphill Cree is a concrete slab carrying LA0778 over West Prong Hemphill Cree in La Salle Parish, Louisiana. It was built in 2001, so it is 24 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 1,622 vehicles a day, roughly 15% of them trucks, projected to reach 1,784 by 2041. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0778
CrossesWest Prong Hemphill Cree
Location0.30 M W of LA 127
RouteState Highway 778
CountyLa Salle Parish
StateLouisiana
Coordinates31.69432, -92.1367
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,622 (2021)
Projected traffic1,784 by 2041
Trucks15%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0778 over West Prong Hemphill Cree built?

It was built in 2001, making it 24 years old in 2025.

What condition is LA0778 over West Prong Hemphill Cree 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 January 2023.

How much traffic does LA0778 over West Prong Hemphill Cree carry?

About 1,622 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0778 over West Prong Hemphill Cree?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0778 over West Prong Hemphill Cree?

It is owned by the State Highway Agency.