US Bridges

I0020 over US 71 KCS RR Ramp SW

Fair

Bossier Parish, Louisiana · 0.6 M E of Diamond Jack B · Structure no. 040804510201431

Built
1966
59 years old
Condition
Fair
inspected November 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
768 ft
10 main spans
Daily traffic
69,892
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over US 71 KCS RR Ramp SW is a steel continuous girder and floorbeam system carrying I0020 over US 71 KCS RR Ramp SW 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 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 69,892 vehicles a day, roughly 19% of them trucks, projected to reach 76,881 by 2041. The structure is 768 ft (234.1 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesI0020
CrossesUS 71 KCS RR Ramp SW
Location0.6 M E of Diamond Jack B
RouteInterstate 20
CountyBossier Parish
StateLouisiana
Coordinates32.51316, -93.7159
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating33 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length768 ft (234.1 m)
Longest span118 ft (36 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic69,892 (2021)
Projected traffic76,881 by 2041
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
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$3.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0020 over US 71 KCS RR Ramp SW built?

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

What condition is I0020 over US 71 KCS RR Ramp SW 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 November 2023.

How much traffic does I0020 over US 71 KCS RR Ramp SW carry?

About 69,892 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I0020 over US 71 KCS RR Ramp SW?

The structure is 768 ft (234.1 m) long with a longest span of 118 ft (36 m) and a deck 33 ft wide.

Who owns I0020 over US 71 KCS RR Ramp SW?

It is owned by the State Highway Agency.