US Bridges

LA3036 over Cross Bayou

Fair

Caddo Parish, Louisiana · .2 MI South of HWY 1 · Structure no. 040900113000882

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
532 ft
11 main spans
Daily traffic
10,312
2021 count
Owner
State
State Highway Agency

About this bridge

LA3036 over Cross Bayou is a steel stringer/multi-beam or girder carrying LA3036 over Cross Bayou in Caddo Parish, Louisiana. It was built in 1960, so it is 65 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 10,312 vehicles a day, roughly 10% of them trucks, projected to reach 11,343 by 2041. The structure is 532 ft (162.2 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLA3036
CrossesCross Bayou
Location.2 MI South of HWY 1
RouteState Highway 3036
CountyCaddo Parish
StateLouisiana
Coordinates32.52267, -93.76044
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length532 ft (162.2 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,312 (2021)
Projected traffic11,343 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-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 LA3036 over Cross Bayou built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA3036 over Cross 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 2023.

How much traffic does LA3036 over Cross Bayou carry?

About 10,312 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA3036 over Cross Bayou?

The structure is 532 ft (162.2 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns LA3036 over Cross Bayou?

It is owned by the State Highway Agency.