US Bridges

LA0148 over Cypress Bayou

Fair

Jackson Parish, Louisiana · 6.74 MI West of LA 146 · Structure no. 052503160206741

Built
1955
70 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
116 ft
6 main spans
Daily traffic
532
2021 count
Owner
State
State Highway Agency

About this bridge

LA0148 over Cypress Bayou is a wood or timber stringer/multi-beam or girder carrying LA0148 over Cypress Bayou in Jackson Parish, Louisiana. It was built in 1955, so it is 70 years old, older 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 5 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 532 vehicles a day, roughly 19% of them trucks, projected to reach 585 by 2041. The structure is 116 ft (35.4 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLA0148
CrossesCypress Bayou
Location6.74 MI West of LA 146
RouteState Highway 148
CountyJackson Parish
StateLouisiana
Coordinates32.42912, -92.6715
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length116 ft (35.4 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic532 (2021)
Projected traffic585 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 LA0148 over Cypress Bayou built?

It was built in 1955, making it 70 years old in 2025.

What condition is LA0148 over Cypress Bayou 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 LA0148 over Cypress Bayou carry?

About 532 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0148 over Cypress Bayou?

The structure is 116 ft (35.4 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns LA0148 over Cypress Bayou?

It is owned by the State Highway Agency.