US Bridges

I0049 over Black Bayou

Good

Caddo Parish, Louisiana · 1.28 M. N. of LA 530 · Structure no. 040900000040351

Built
2013
12 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
600 ft
6 main spans
Daily traffic
53,023
2021 count
Owner
State
State Highway Agency

About this bridge

I0049 over Black Bayou is a prestressed concrete continuous stringer/multi-beam or girder carrying I0049 over Black Bayou in Caddo Parish, Louisiana. It was built in 2013, so it is 12 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 53,023 vehicles a day, roughly 36% of them trucks, projected to reach 58,325 by 2041. The structure is 600 ft (182.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0049
CrossesBlack Bayou
Location1.28 M. N. of LA 530
RouteInterstate 49
Coordinates32.78722, -93.8883
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating45.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length600 ft (182.9 m)
Longest span100 ft (30.5 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,023 (2021)
Projected traffic58,325 by 2041
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I0049 over Black Bayou built?

It was built in 2013, making it 12 years old in 2025.

What condition is I0049 over Black Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does I0049 over Black Bayou carry?

About 53,023 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0049 over Black Bayou?

The structure is 600 ft (182.9 m) long with a longest span of 100 ft (30.5 m) and a deck 43 ft wide.

Who owns I0049 over Black Bayou?

It is owned by the State Highway Agency.