Structure 40804510201407 · Bossier County, LA

I0020 over 1-20 US 71 Kcs Rr

Carries I0020 over 1-20 US 71 Kcs Rr, 0.2 Mi S Of I-20/US 71.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,187 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

1,187 ft end to end, longest span 83 ft: about 3.3 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1966rebuilt 1999
Length1187.0 ft361.8 m
Daily traffic15,642counted 2021
Last inspectedJune 2023every 24 months

Location

StateLouisiana
CountyBossier
Location0.2 Mi S Of I-20/US 71
CarriesI0020
Crosses1-20 US 71 Kcs Rr
Coordinates32.51286, -93.71768

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1187.0 ft (361.8 m)
Max Span83.0 ft (25.3 m)
Deck Width27.6 ft (8.4 m)
Deck Area3039.1 sq m
Main Spans21
Year Built1966 (reconstructed 1999)

Traffic

Avg Daily Traffic15,642 (2021)
Truck Traffic19%
Lanes On Bridge1
Lanes Under Bridge12

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number040804510201407

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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