US Bridges

I0020 over Macks Bayou LA 782-2

Fair

Bossier Parish, Louisiana · 1.4 MI E of LA 3105 · Structure no. 040804510204231

Built
1967
58 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
465 ft
7 main spans
Daily traffic
69,892
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over Macks Bayou LA 782-2 is a prestressed concrete stringer/multi-beam or girder carrying I0020 over Macks Bayou LA 782-2 in Bossier Parish, Louisiana. It was built in 1967, so it is 58 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.

It carries about 69,892 vehicles a day, roughly 19% of them trucks, projected to reach 76,881 by 2041. The structure is 465 ft (141.7 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesI0020
CrossesMacks Bayou LA 782-2
Location1.4 MI E of LA 3105
RouteInterstate 20
CountyBossier Parish
StateLouisiana
Coordinates32.52811, -93.6755
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length465 ft (141.7 m)
Longest span80 ft (24.4 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,892 (2021)
Projected traffic76,881 by 2041
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I0020 over Macks Bayou LA 782-2 built?

It was built in 1967, making it 58 years old in 2025.

What condition is I0020 over Macks Bayou LA 782-2 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 2024.

How much traffic does I0020 over Macks Bayou LA 782-2 carry?

About 69,892 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I0020 over Macks Bayou LA 782-2?

The structure is 465 ft (141.7 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.

Who owns I0020 over Macks Bayou LA 782-2?

It is owned by the State Highway Agency.