US Bridges

LA0846 over Castor Creek

Fair

Caldwell Parish, Louisiana · 2.35 MI North of LA 4 · Structure no. 581108111102351

Built
1985
40 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
502 ft
10 main spans
Daily traffic
205
2021 count
Owner
State
State Highway Agency

About this bridge

LA0846 over Castor Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0846 over Castor Creek in Caldwell Parish, Louisiana. It was built in 1985, so it is 40 years old, younger 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 205 vehicles a day, roughly 11% of them trucks, projected to reach 225 by 2041. The structure is 502 ft (153 m) long and 33 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0846
CrossesCastor Creek
Location2.35 MI North of LA 4
RouteState Highway 846
CountyCaldwell Parish
StateLouisiana
Coordinates32.13581, -92.2162
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length502 ft (153 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2021)
Projected traffic225 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 LA0846 over Castor Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is LA0846 over Castor Creek 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 June 2024.

How much traffic does LA0846 over Castor Creek carry?

About 205 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0846 over Castor Creek?

The structure is 502 ft (153 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns LA0846 over Castor Creek?

It is owned by the State Highway Agency.