US Bridges

I0020 over US71&KCSRR

Poor

Bossier Parish, Louisiana · Ramps for US 71 · Structure no. 040804510201416

Built
1966
59 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
544 ft
10 main spans
Daily traffic
23,105
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over US71&KCSRR is a steel continuous stringer/multi-beam or girder carrying I0020 over US71&KCSRR in Bossier Parish, Louisiana. It was built in 1966, so it is 59 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 23,105 vehicles a day, roughly 19% of them trucks, projected to reach 25,415 by 2041. The structure is 544 ft (165.8 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI0020
CrossesUS71&KCSRR
LocationRamps for US 71
RouteInterstate 20
CountyBossier Parish
StateLouisiana
Coordinates32.51511, -93.7157
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length544 ft (165.8 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,105 (2021)
Projected traffic25,415 by 2041
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0020 over US71&KCSRR built?

It was built in 1966, making it 59 years old in 2025.

What condition is I0020 over US71&KCSRR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does I0020 over US71&KCSRR carry?

About 23,105 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I0020 over US71&KCSRR?

The structure is 544 ft (165.8 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns I0020 over US71&KCSRR?

It is owned by the State Highway Agency.