Structure 18550450 · Lowndes County, GA

Inner Perimeter RD over Knight Creek

Carries Inner Perimeter RD over Knight Creek, 7 Mi E Of Valdosta.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 50 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built198937 years old
Length49.9 ft15.2 m
Daily traffic9,270counted 2024
Last inspectedDecember 2023every 24 months

Location

StateGeorgia
CountyLowndes
Location7 Mi E Of Valdosta
CarriesInner Perimeter RD
CrossesKnight Creek
Coordinates30.82075, -83.22944

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length49.9 ft (15.2 m)
Max Span12.1 ft (3.7 m)
Deck Area287.3 sq m
Main Spans4
Year Built1989

Traffic

Avg Daily Traffic9,270 (2024)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000018550450

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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