US Bridges

LA0436 over Drain

PoorPosted for load

Washington Parish, Louisiana · 1.1 M E of LA 62 · Structure no. 625908590801181

Built
1958
67 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
95 ft
5 main spans
Daily traffic
1,306
2021 count
Owner
State
State Highway Agency

About this bridge

LA0436 over Drain is a wood or timber stringer/multi-beam or girder carrying LA0436 over Drain in Washington Parish, Louisiana. It was built in 1958, so it is 67 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 1,306 vehicles a day, roughly 13% of them trucks, projected to reach 1,436 by 2041. The structure is 95 ft (29 m) long and 26 ft wide.

CarriesLA0436
CrossesDrain
Location1.1 M E of LA 62
RouteState Highway 436
Coordinates30.90596, -89.994
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 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 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 rating23.8 US tons
Inventory rating15 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 10
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,306 (2021)
Projected traffic1,436 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 LA0436 over Drain built?

It was built in 1958, making it 67 years old in 2025.

What condition is LA0436 over Drain 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 June 2024.

How much traffic does LA0436 over Drain carry?

About 1,306 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0436 over Drain?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns LA0436 over Drain?

It is owned by the State Highway Agency.