Structure 47I00400054 · Knox County, TN

I40 Ll over I40-ll / 17th. Street

Carries I40 Ll over I40-ll / 17th. Street, In Knoxville.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

143 ft end to end, longest span 43 ft. 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 tee-beam bridge.

Built1965rebuilt 1981
Length143.0 ft43.6 m
Daily traffic139,697counted 2021
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyKnox
LocationIn Knoxville
CarriesI40 Ll
CrossesI40-ll / 17th. Street
Coordinates35.96432, -83.93671

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length143.0 ft (43.6 m)
Max Span43.0 ft (13.1 m)
Deck Width104.3 ft (31.8 m)
Deck Area1386.5 sq m
Main Spans4
Year Built1965 (reconstructed 1981)

Traffic

Avg Daily Traffic139,697 (2021)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47I00400054

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