US Bridges

US0190 over Bayou Bonfouca

Fair

St. Tammany Parish, Louisiana · US0190 · Structure no. 625200131220001

Built
1933
92 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
181 ft
6 main spans
Daily traffic
16,944
2021 count
Owner
State
State Highway Agency

About this bridge

US0190 over Bayou Bonfouca is a concrete tee beam carrying US0190 over Bayou Bonfouca in St. Tammany Parish, Louisiana. It was built in 1933, so it is 92 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 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 16,944 vehicles a day, roughly 6% of them trucks, projected to reach 18,638 by 2041. The structure is 181 ft (55.2 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesUS0190
CrossesBayou Bonfouca
LocationUS0190
RouteU.S. Route 190
CountySt. Tammany Parish
StateLouisiana
Coordinates30.29127, -89.7905
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length181 ft (55.2 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,944 (2021)
Projected traffic18,638 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$822,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US0190 over Bayou Bonfouca built?

It was built in 1933, making it 92 years old in 2025.

What condition is US0190 over Bayou Bonfouca 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 September 2023.

How much traffic does US0190 over Bayou Bonfouca carry?

About 16,944 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is US0190 over Bayou Bonfouca?

The structure is 181 ft (55.2 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns US0190 over Bayou Bonfouca?

It is owned by the State Highway Agency.