Structure 18300030 · Long County, GA

US 25 SR 23 over Back Swamp

Carries US 25 SR 23 over Back Swamp, 3 Mi W Of Ludowici.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT693 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

693 ft end to end, longest span 33 ft: about 1.9 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 tee-beam bridge.

Built1954rebuilt 1994
Length692.9 ft211.2 m
Daily traffic13,500counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateGeorgia
CountyLong
Location3 Mi W Of Ludowici
CarriesUS 25 SR 23
CrossesBack Swamp
Coordinates31.68407, -81.80045

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length692.9 ft (211.2 m)
Max Span33.1 ft (10.1 m)
Deck Width41.3 ft (12.6 m)
Deck Area2661.1 sq m
Main Spans21
Year Built1954 (reconstructed 1994)

Traffic

Avg Daily Traffic13,500 (2024)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000018300030

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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