US Bridges

US0090 over Wax Lake Outlet

Poor

St. Mary Parish, Louisiana · 0.6 MI West of LA 182 · Structure no. 035104240522602

Built
1975
50 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,303 ft
6 main spans
Daily traffic
10,035
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over Wax Lake Outlet is a prestressed concrete continuous stringer/multi-beam or girder carrying US0090 over Wax Lake Outlet in St. Mary Parish, Louisiana. It was built in 1975, so it is 50 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.

It carries about 10,035 vehicles a day, roughly 14% of them trucks, projected to reach 11,038 by 2041. The structure is 1,303 ft (397.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0090
CrossesWax Lake Outlet
Location0.6 MI West of LA 182
RouteU.S. Route 90
Coordinates29.69837, -91.3714
Functional classUrban Principal Arterial - Other Freeway or Expressway

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6 (+7 approach)
Design loadHS 20
Structure length1,303 ft (397.2 m)
Longest span103 ft (31.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,035 (2021)
Projected traffic11,038 by 2041
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 US0090 over Wax Lake Outlet built?

It was built in 1975, making it 50 years old in 2025.

What condition is US0090 over Wax Lake Outlet 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 March 2024.

How much traffic does US0090 over Wax Lake Outlet carry?

About 10,035 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0090 over Wax Lake Outlet?

The structure is 1,303 ft (397.2 m) long with a longest span of 103 ft (31.4 m) and a deck 43 ft wide.

Who owns US0090 over Wax Lake Outlet?

It is owned by the State Highway Agency.