Structure 47I00400079 · Knox County, TN

I40 over Boruff St.

Carries I40 over Boruff St., .9 M NE Of Dodson AVE.

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 FT216 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

216 ft end to end, longest span 84 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 tee-beam bridge.

Built1967rebuilt 2007
Length215.9 ft65.8 m
Daily traffic82,386counted 2021
Last inspectedDecember 2024every 24 months

Location

StateTennessee
CountyKnox
Location.9 M NE Of Dodson AVE
CarriesI40
CrossesBoruff St.
Coordinates35.98684, -83.90744

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length215.9 ft (65.8 m)
Max Span84.0 ft (25.6 m)
Deck Width168.0 ft (51.2 m)
Deck Area3369.0 sq m
Main Spans3
Year Built1967 (reconstructed 2007)

Traffic

Avg Daily Traffic82,386 (2021)
Truck Traffic6%
Lanes On Bridge10
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47I00400079

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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