US Bridges

Jarvis Bridge RD over Black Bayou

FairPosted for load

Terrebonne Parish, Louisiana · 0.01 MI N of LA 182 · Structure no. 025529386905771

Built
1968
57 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Jarvis Bridge RD over Black Bayou is a steel stringer/multi-beam or girder carrying Jarvis Bridge RD over Black Bayou in Terrebonne Parish, Louisiana. It was built in 1968, so it is 57 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. Its operating status is: posted for load restriction.

It carries about 130 vehicles a day, projected to reach 143 by 2040. The structure is 80 ft (24.4 m) long and 26 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesJarvis Bridge RD
CrossesBlack Bayou
Location0.01 MI N of LA 182
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.6432, -90.96135
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1 (+2 approach)
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span42 ft (12.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic143 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Jarvis Bridge RD over Black Bayou built?

It was built in 1968, making it 57 years old in 2025.

What condition is Jarvis Bridge RD over Black 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 April 2023.

How much traffic does Jarvis Bridge RD over Black Bayou carry?

About 130 vehicles per day (2020 count).

How long is Jarvis Bridge RD over Black Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 42 ft (12.8 m) and a deck 26 ft wide.

Who owns Jarvis Bridge RD over Black Bayou?

It is owned by the County Highway Agency.