Structure 21000610110890B · Claiborne County, MS

US 61 over Big Bayou Pierre

Carries US 61 over Big Bayou Pierre, 2.4 Mi N SR 18.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT983 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

983 ft end to end, longest span 180 ft: about 2.7 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.

Built199630 years old
Length982.9 ft299.6 m
Daily traffic3,350counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateMississippi
CountyClaiborne
Location2.4 Mi N SR 18
CarriesUS 61
CrossesBig Bayou Pierre
Coordinates31.99874, -90.96480

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length982.9 ft (299.6 m)
Max Span180.1 ft (54.9 m)
Deck Width43.0 ft (13.1 m)
Deck Area3924.8 sq m
Main Spans3
Year Built1996

Traffic

Avg Daily Traffic3,350 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number21000610110890B

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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