Structure 47I00750110 · Knox County, TN

I75 Ll over I75 - Ll / Csx Railroad

Carries I75 Ll over I75 - Ll / Csx Railroad, In Knoxville.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT280 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

280 ft end to end, longest span 99 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 multi-beam bridge.

Built198145 years old
Length279.5 ft85.2 m
Daily traffic90,947counted 2021
Last inspectedJanuary 2025every 24 months

Location

StateTennessee
CountyKnox
LocationIn Knoxville
CarriesI75 Ll
CrossesI75 - Ll / Csx Railroad
Coordinates35.96913, -83.97980

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length279.5 ft (85.2 m)
Max Span99.4 ft (30.3 m)
Deck Width61.0 ft (18.6 m)
Deck Area1584.7 sq m
Main Spans3
Year Built1981

Traffic

Avg Daily Traffic90,947 (2021)
Truck Traffic6%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number47I00750110

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.

Nearby Bridges