US Bridges

I0020 over Black Lake Creek

Fair

Bienville Parish, Louisiana · 1.31 M West of JCT of LA9 · Structure no. 040704510412032

Built
1964
61 years old, rebuilt 1995
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
225 ft
9 main spans
Daily traffic
37,514
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over Black Lake Creek is a concrete slab carrying I0020 over Black Lake Creek in Bienville Parish, Louisiana. It was built in 1964 and reconstructed in 1995, so it is 61 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 37,514 vehicles a day, roughly 36% of them trucks, projected to reach 41,265 by 2041. The structure is 225 ft (68.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0020
CrossesBlack Lake Creek
Location1.31 M West of JCT of LA9
RouteInterstate 20
Coordinates32.56662, -92.9693
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,514 (2021)
Projected traffic41,265 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 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 I0020 over Black Lake Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1995.

What condition is I0020 over Black Lake Creek 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 May 2023.

How much traffic does I0020 over Black Lake Creek carry?

About 37,514 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0020 over Black Lake Creek?

The structure is 225 ft (68.6 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns I0020 over Black Lake Creek?

It is owned by the State Highway Agency.