Structure 14845 · Logan County, AR

Johnson Road-logan over Short Mountain Creek

Carries Johnson Road-logan over Short Mountain Creek, 0.36 Mi W SH 309.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

56 ft end to end. Lengths and the car 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.

Built193096 years old
Length56.1 ft17.1 m
Daily traffic135counted 2018
Last inspectedSeptember 2024every 12 months

Location

StateArkansas
CountyLogan
Location0.36 Mi W SH 309
CarriesJohnson Road-logan
CrossesShort Mountain Creek
Coordinates35.26778, -93.68828

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length56.1 ft (17.1 m)
Max Span47.9 ft (14.6 m)
Deck Width14.8 ft (4.5 m)
Deck Area77.0 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic135 (2018)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000014845

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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