Structure 40904510118818 · Caddo County, LA

I0020 over La AVE &howell ST

Carries I0020 over La AVE &howell ST, 2.3 Mi West Of La 71.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT318 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

318 ft end to end, longest span 80 ft: about 4 semi-trucks nose to tail. 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 tee-beam bridge.

Built196561 years old
Length317.9 ft96.9 m
Daily traffic—reported figure implausible
Last inspectedMarch 2024every 24 months

Location

StateLouisiana
CountyCaddo
Location2.3 Mi West Of La 71
CarriesI0020
CrossesLa AVE &howell ST
Coordinates32.50644, -93.74623

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length317.9 ft (96.9 m)
Max Span80.1 ft (24.4 m)
Deck Width25.6 ft (7.8 m)
Deck Area755.8 sq m
Main Spans5
Year Built1965

Traffic

Avg Daily Traffic87,567 (2021)
That is about 87,567 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic19%
Lanes On Bridge1
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number040904510118818

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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