US Bridges

I0020 over Cooley Branch

Fair

Webster Parish, Louisiana · 0.41M E of LA 7 @ Minden · Structure no. 046004510309431

Built
1960
65 years old, rebuilt 1993
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
200 ft
5 main spans
Daily traffic
44,225
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over Cooley Branch is a prestressed concrete continuous stringer/multi-beam or girder carrying I0020 over Cooley Branch in Webster Parish, Louisiana. It was built in 1960 and reconstructed in 1993, so it is 65 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 44,225 vehicles a day, roughly 19% of them trucks, projected to reach 48,647 by 2041. The structure is 200 ft (61 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI0020
CrossesCooley Branch
Location0.41M E of LA 7 @ Minden
RouteInterstate 20
CountyWebster Parish
StateLouisiana
Coordinates32.58792, -93.2858
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,225 (2021)
Projected traffic48,647 by 2041
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Cooley Branch built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1993.

What condition is I0020 over Cooley Branch 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 September 2023.

How much traffic does I0020 over Cooley Branch carry?

About 44,225 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I0020 over Cooley Branch?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns I0020 over Cooley Branch?

It is owned by the State Highway Agency.