Structure 2100130 · Bibb County, GA

US 23 Nbl SR 87 over Walnut Creek

Carries US 23 Nbl SR 87 over Walnut Creek, East Edge Of Macon.

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 FT288 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

288 ft end to end, longest span 24 ft: about 4 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.

Built194482 years old
Length288.1 ft87.8 m
Daily traffic14,120counted 2024
Last inspectedMarch 2024every 24 months

Location

StateGeorgia
CountyBibb
LocationEast Edge Of Macon
CarriesUS 23 Nbl SR 87
CrossesWalnut Creek
Coordinates32.84630, -83.59550

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length288.1 ft (87.8 m)
Max Span24.0 ft (7.3 m)
Deck Width30.5 ft (9.3 m)
Deck Area816.5 sq m
Main Spans14
Year Built1944

Traffic

Avg Daily Traffic14,120 (2024)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalUnknown
Structure Number000000002100130

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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