US Bridges

LA0027 over Houston River

Fair

Calcasieu Parish, Louisiana · 0.3 MI N of LA 379 · Structure no. 071000310603751

Built
1982
43 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
580 ft
13 main spans
Daily traffic
7,798
2021 count
Owner
State
State Highway Agency

About this bridge

LA0027 over Houston River is a steel stringer/multi-beam or girder carrying LA0027 over Houston River in Calcasieu Parish, Louisiana. It was built in 1982, so it is 43 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 7,798 vehicles a day, roughly 18% of them trucks, projected to reach 8,577 by 2041. The structure is 580 ft (176.8 m) long and 47 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesLA0027
CrossesHouston River
Location0.3 MI N of LA 379
RouteState Highway 27
Coordinates30.28959, -93.35593
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating32.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length580 ft (176.8 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,798 (2021)
Projected traffic8,577 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 LA0027 over Houston River built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0027 over Houston 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 November 2024.

How much traffic does LA0027 over Houston River carry?

About 7,798 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA0027 over Houston River?

The structure is 580 ft (176.8 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns LA0027 over Houston River?

It is owned by the State Highway Agency.