US Bridges

LA0008 over Riley Branch CR

Good

La Salle Parish, Louisiana · 0.9 MI SW of LA 774 · Structure no. 583000400407081

Built
1972
53 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
1,590
2021 count
Owner
State
State Highway Agency

About this bridge

LA0008 over Riley Branch CR is a concrete culvert carrying LA0008 over Riley Branch CR in La Salle Parish, Louisiana. It was built in 1972, so it is 53 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 1,590 vehicles a day, roughly 21% of them trucks, projected to reach 1,749 by 2041. The structure is 25 ft (7.6 m) long and 127 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesLA0008
CrossesRiley Branch CR
Location0.9 MI SW of LA 774
RouteState Highway 8
Coordinates31.64784, -92.2269
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span9 ft (2.7 m)
Deck width127 ft (38.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,590 (2021)
Projected traffic1,749 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 LA0008 over Riley Branch CR built?

It was built in 1972, making it 53 years old in 2025.

What condition is LA0008 over Riley Branch CR 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 November 2023.

How much traffic does LA0008 over Riley Branch CR carry?

About 1,590 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0008 over Riley Branch CR?

The structure is 25 ft (7.6 m) long with a longest span of 9 ft (2.7 m) and a deck 127 ft wide.

Who owns LA0008 over Riley Branch CR?

It is owned by the State Highway Agency.