US Bridges

I0020 over Drain

Fair

Richland Parish, Louisiana · 5.3 MI East of LA 133 · Structure no. 054204510709611

Built
1968
57 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
38,890
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over Drain is a concrete culvert carrying I0020 over Drain in Richland Parish, Louisiana. It was built in 1968, so it is 57 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 38,890 vehicles a day, roughly 37% of them trucks, projected to reach 42,779 by 2041. The structure is 34 ft (10.4 m) long and 177 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0020
CrossesDrain
Location5.3 MI East of LA 133
RouteInterstate 20
Coordinates32.45912, -91.7747
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width177 ft (53.9 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,890 (2021)
Projected traffic42,779 by 2041
Trucks37%
Lanes on structure4
Traffic directionTwo-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 Drain built?

It was built in 1968, making it 57 years old in 2025.

What condition is I0020 over Drain 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 October 2023.

How much traffic does I0020 over Drain carry?

About 38,890 vehicles per day (2021 count), of which roughly 37% are trucks.

How long is I0020 over Drain?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 177 ft wide.

Who owns I0020 over Drain?

It is owned by the State Highway Agency.