Structure 1I00750027 · Anderson County, TN

I75 over Coal Creek

Carries I75 over Coal Creek, 1.5 M E Of Lake City.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT532 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

532 ft end to end, longest span 156 ft: about 7 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.

Built197155 years old
Length532.2 ft162.2 m
Daily traffic49,351counted 2021
Last inspectedAugust 2023every 24 months

Location

StateTennessee
CountyAnderson
Location1.5 M E Of Lake City
CarriesI75
CrossesCoal Creek
Coordinates36.21252, -84.13615

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length532.2 ft (162.2 m)
Max Span155.8 ft (47.5 m)
Deck Width44.3 ft (13.5 m)
Deck Area2189.7 sq m
Main Spans4
Year Built1971

Traffic

Avg Daily Traffic49,351 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number01I00750027

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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