I0020 over Boone Creek

Fair

Webster Parish, Louisiana · 2.33 MI West of LA 7 · Structure no. 046004510304012

Built: 1987; 38 years old
Condition: Fair; inspected September 2024
Type: Slab; Concrete
Length: 160 ft; 8 main spans
Daily traffic: 31,074; 2021 count
Owner: State; State Highway Agency

About this bridge

I0020 over Boone Creek is a concrete slab carrying I0020 over Boone Creek in Webster Parish, Louisiana. It was built in 1987, so it is 38 years old, younger 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 31,074 vehicles a day, roughly 36% of them trucks, projected to reach 34,181 by 2041. The structure is 160 ft (48.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0020

CrossesBoone Creek

Location2.33 MI West of LA 7

RouteInterstate 20

CountyWebster Parish

StateLouisiana

Coordinates32.58445, -93.3755

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.

Component	Rating	Meaning
Deck	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection	8 Very Good	No problems noted.

Last inspectionSeptember 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 geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating59 US tons

Inventory rating36 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans8

Design loadHS 20

Structure length160 ft (48.8 m)

Longest span20 ft (6.1 m)

Deck width43 ft (13 m)

Roadway width40 ft (12.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,074 (2021)

Projected traffic34,181 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 Boone Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is I0020 over Boone 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 September 2024.

How much traffic does I0020 over Boone Creek carry?

About 31,074 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0020 over Boone Creek?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns I0020 over Boone Creek?

It is owned by the State Highway Agency.