Structure 4700240 · Catoosa County, GA

Tunnel H-varnell over I-75

Carries Tunnel H-varnell over I-75, 5 Mi SE Of Ringgold.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT231 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

231 ft end to end, longest span 76 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 multi-beam bridge.

Built196363 years old
Length231.0 ft70.4 m
Daily traffic500counted 2024
Last inspectedNovember 2023every 24 months

Location

StateGeorgia
CountyCatoosa
Location5 Mi SE Of Ringgold
CarriesTunnel H-varnell
CrossesI-75
Coordinates34.86908, -85.03687

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length231.0 ft (70.4 m)
Max Span76.1 ft (23.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area689.9 sq m
Main Spans4
Year Built1963

Traffic

Avg Daily Traffic500 (2024)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000004700240

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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