US Bridges

LA0010-S over Raby Branch

Fair

St. Helena Parish, Louisiana · 0.5M East of LA 43 · Structure no. 624608461200501

Built
1959
66 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
39 ft
2 main spans
Daily traffic
225
2021 count
Owner
State
State Highway Agency

About this bridge

LA0010-S over Raby Branch is a concrete slab carrying LA0010-S over Raby Branch in St. Helena Parish, Louisiana. It was built in 1959, so it is 66 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 5 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 225 vehicles a day, roughly 13% of them trucks, projected to reach 247 by 2041. The structure is 39 ft (11.9 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesLA0010-S
CrossesRaby Branch
Location0.5M East of LA 43
RouteState Highway 10
CountySt. Helena Parish
StateLouisiana
Coordinates30.82348, -90.65987
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length39 ft (11.9 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2021)
Projected traffic247 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 LA0010-S over Raby Branch built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0010-S over Raby 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 LA0010-S over Raby Branch carry?

About 225 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0010-S over Raby Branch?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns LA0010-S over Raby Branch?

It is owned by the State Highway Agency.