US Bridges

ST Charles ST over Bayou Black

Fair

Terrebonne Parish, Louisiana · P5529353904461 · Structure no. 025529353904461

Built
2003
22 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
14,665
2023 count
Owner
County
County Highway Agency

About this bridge

ST Charles ST over Bayou Black is a concrete culvert carrying ST Charles ST over Bayou Black in Terrebonne Parish, Louisiana. It was built in 2003, so it is 22 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 14,665 vehicles a day, projected to reach 16,131 by 2043. The structure is 35 ft (10.7 m) long and 107 ft wide.

Location

Open in Google Maps
CarriesST Charles ST
CrossesBayou Black
LocationP5529353904461
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.59064, -90.74228
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span10 ft (3 m)
Deck width107 ft (32.5 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,665 (2023)
Projected traffic16,131 by 2043
Trucks—
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 ST Charles ST over Bayou Black built?

It was built in 2003, making it 22 years old in 2025.

What condition is ST Charles ST over Bayou Black 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 May 2023.

How much traffic does ST Charles ST over Bayou Black carry?

About 14,665 vehicles per day (2023 count).

How long is ST Charles ST over Bayou Black?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m) and a deck 107 ft wide.

Who owns ST Charles ST over Bayou Black?

It is owned by the County Highway Agency.