Structure 6121 · Columbia County, AR

US 371 Lm12.71 S-7 over Dorchet Creek

Carries US 371 Lm12.71 S-7 over Dorchet Creek, 11 Mi SW Magnolia Ar.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT210 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

210 ft end to end, longest span 35 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.

Built198640 years old
Length210.0 ft64 m
Daily traffic1,900counted 2018
Last inspectedJanuary 2025every 48 months

Location

StateArkansas
CountyColumbia
Location11 Mi SW Magnolia Ar
CarriesUS 371 Lm12.71 S-7
CrossesDorchet Creek
Coordinates33.20359, -93.39769

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length210.0 ft (64 m)
Max Span35.1 ft (10.7 m)
Deck Width42.7 ft (13 m)
Deck Area832 sq m
Main Spans6
Year Built1986

Traffic

Avg Daily Traffic1,900 (2018)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000006121

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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