US Bridges

I0049 over Doe Slough Canal

Good

Caddo Parish, Louisiana · 1.0 MI South of LA 173 · Structure no. 040900000040347

Built
2013
12 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
42,454
2021 count
Owner
State
State Highway Agency

About this bridge

I0049 over Doe Slough Canal is a concrete culvert carrying I0049 over Doe Slough Canal 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 42,454 vehicles a day, roughly 36% of them trucks, projected to reach 46,699 by 2041. The structure is 29 ft (8.8 m) long and 235 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesI0049
CrossesDoe Slough Canal
Location1.0 MI South of LA 173
RouteInterstate 49
Coordinates32.66199, -93.8447
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span10 ft (3 m)
Deck width235 ft (71.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,454 (2021)
Projected traffic46,699 by 2041
Trucks36%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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 Doe Slough Canal built?

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

What condition is I0049 over Doe Slough Canal 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 April 2024.

How much traffic does I0049 over Doe Slough Canal carry?

About 42,454 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0049 over Doe Slough Canal?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m) and a deck 235 ft wide.

Who owns I0049 over Doe Slough Canal?

It is owned by the State Highway Agency.