Structure 40900000300226 · Caddo County, LA

Bostwick RD over Choctaw Bayou

Carries Bostwick RD over Choctaw Bayou, 0.7 Mi West Of La 173.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

180 ft end to end, longest span 20 ft: about 3 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 slab bridge.

Built201313 years old
Length180.1 ft54.9 m
Daily traffic180counted 2019
Last inspectedMarch 2023every 24 months

Location

StateLouisiana
CountyCaddo
Location0.7 Mi West Of La 173
CarriesBostwick RD
CrossesChoctaw Bayou
Coordinates32.55798, -93.87337

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length180.1 ft (54.9 m)
Max Span20.0 ft (6.1 m)
Deck Width30.5 ft (9.3 m)
Deck Area510.6 sq m
Main Spans9
Year Built2013

Traffic

Avg Daily Traffic180 (2019)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number040900000300226

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.

Nearby Bridges