Structure 40904510119175 · Caddo County, LA

I0020 over Spring St/la 1

Carries I0020 over Spring St/la 1, I-20 Ramp To La 1.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT807 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

807 ft end to end, longest span 130 ft: about 2.2 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.

Built196561 years old
Length807.1 ft246 m
Daily traffic9,690counted 2016
Last inspectedJuly 2023every 24 months

Location

StateLouisiana
CountyCaddo
LocationI-20 Ramp To La 1
CarriesI0020
CrossesSpring St/la 1
Coordinates32.50986, -93.74270

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length807.1 ft (246 m)
Max Span129.9 ft (39.6 m)
Deck Width35.4 ft (10.8 m)
Deck Area2656.8 sq m
Main Spans11
Year Built1965

Traffic

Avg Daily Traffic9,690 (2016)
Truck Traffic19%
Lanes On Bridge1
Lanes Under Bridge10

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number040904510119175

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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