US Bridges

LA0042 over Blood River

Fair

Livingston Parish, Louisiana · LA0042 · Structure no. 623202610204511

Built
1961
64 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
1,783
2021 count
Owner
State
State Highway Agency

About this bridge

LA0042 over Blood River is a concrete slab carrying LA0042 over Blood River in Livingston Parish, Louisiana. It was built in 1961, so it is 64 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 6 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 1,783 vehicles a day, roughly 12% of them trucks, projected to reach 1,961 by 2041. The structure is 140 ft (42.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA0042
CrossesBlood River
LocationLA0042
RouteState Highway 42
CountyLivingston Parish
StateLouisiana
Coordinates30.43901, -90.6104
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,783 (2021)
Projected traffic1,961 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$663,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0042 over Blood River built?

It was built in 1961, making it 64 years old in 2025.

What condition is LA0042 over Blood River 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 January 2024.

How much traffic does LA0042 over Blood River carry?

About 1,783 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0042 over Blood River?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0042 over Blood River?

It is owned by the State Highway Agency.