US Bridges

I0220 over Flat River

Fair

Bossier Parish, Louisiana · 3.9 MI East of LA 3105 · Structure no. 040804513107662

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
335 ft
5 main spans
Daily traffic
25,004
2021 count
Owner
State
State Highway Agency

About this bridge

I0220 over Flat River is a prestressed concrete stringer/multi-beam or girder carrying I0220 over Flat River in Bossier Parish, Louisiana. It was built in 1978, so it is 47 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.

It carries about 25,004 vehicles a day, roughly 19% of them trucks, projected to reach 27,504 by 2041. The structure is 335 ft (102.1 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesI0220
CrossesFlat River
Location3.9 MI East of LA 3105
RouteInterstate 220
Coordinates32.55909, -93.64318
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating97 US tons
Inventory rating38 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length335 ft (102.1 m)
Longest span67 ft (20.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,004 (2021)
Projected traffic27,504 by 2041
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 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 I0220 over Flat River built?

It was built in 1978, making it 47 years old in 2025.

What condition is I0220 over Flat River 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 November 2023.

How much traffic does I0220 over Flat River carry?

About 25,004 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I0220 over Flat River?

The structure is 335 ft (102.1 m) long with a longest span of 67 ft (20.4 m) and a deck 43 ft wide.

Who owns I0220 over Flat River?

It is owned by the State Highway Agency.