US Bridges

LA1226 over Clear Lake

Fair

Natchitoches Parish, Louisiana · 2.67 Mi. N of Int US84 · Structure no. 083503590202671

Built
1995
30 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
500 ft
5 main spans
Daily traffic
495
2021 count
Owner
State
State Highway Agency

About this bridge

LA1226 over Clear Lake is a prestressed concrete continuous stringer/multi-beam or girder carrying LA1226 over Clear Lake in Natchitoches Parish, Louisiana. It was built in 1995, so it is 30 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 495 vehicles a day, roughly 14% of them trucks, projected to reach 544 by 2041. The structure is 500 ft (152.4 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLA1226
CrossesClear Lake
Location2.67 Mi. N of Int US84
RouteState Highway 1226
Coordinates31.84649, -92.9588
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating57 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span100 ft (30.5 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic495 (2021)
Projected traffic544 by 2041
Trucks14%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1226 over Clear Lake built?

It was built in 1995, making it 30 years old in 2025.

What condition is LA1226 over Clear Lake 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 2023.

How much traffic does LA1226 over Clear Lake carry?

About 495 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA1226 over Clear Lake?

The structure is 500 ft (152.4 m) long with a longest span of 100 ft (30.5 m) and a deck 35 ft wide.

Who owns LA1226 over Clear Lake?

It is owned by the State Highway Agency.