US Bridges

Ott LN over Bayou Black

FairPosted for load

Ascension Parish, Louisiana · .08 MI S Inter Cannon RD · Structure no. 610330313911141

Built
1977
48 years old, rebuilt 2001
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
58 ft
2 main spans
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

Ott LN over Bayou Black is a concrete slab carrying Ott LN over Bayou Black in Ascension Parish, Louisiana. It was built in 1977 and reconstructed in 2001, so it is 48 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, projected to reach 22 by 2039. The structure is 58 ft (17.7 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesOtt LN
CrossesBayou Black
Location.08 MI S Inter Cannon RD
RouteCounty Highway 0
CountyAscension Parish
StateLouisiana
Coordinates30.26271, -90.91258
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic22 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
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 Ott LN over Bayou Black built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2001.

What condition is Ott LN 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 January 2023.

How much traffic does Ott LN over Bayou Black carry?

About 20 vehicles per day (2019 count).

How long is Ott LN over Bayou Black?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Ott LN over Bayou Black?

It is owned by the County Highway Agency.