US Bridges

LA0531 over Parmers Creek

PoorPosted for load

Webster Parish, Louisiana · 2.2 MI North of LA 792 · Structure no. 046001110103491

Built
1967
58 years old
Condition
Poor
inspected September 2023
Type
Slab
Concrete
Length
134 ft
7 main spans
Daily traffic
236
2021 count
Owner
State
State Highway Agency

About this bridge

LA0531 over Parmers Creek is a concrete slab carrying LA0531 over Parmers Creek in Webster Parish, Louisiana. It was built in 1967, so it is 58 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 236 vehicles a day, roughly 19% of them trucks, projected to reach 259 by 2041. The structure is 134 ft (40.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0531
CrossesParmers Creek
Location2.2 MI North of LA 792
RouteState Highway 531
Coordinates32.4789, -93.2415
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 15
Structure length134 ft (40.8 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2021)
Projected traffic259 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$639,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0531 over Parmers Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is LA0531 over Parmers Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does LA0531 over Parmers Creek carry?

About 236 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0531 over Parmers Creek?

The structure is 134 ft (40.8 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0531 over Parmers Creek?

It is owned by the State Highway Agency.