Structure 47I06400025 · Knox County, TN

Nfa G305 over East Towne Rd. E. / I640

Carries Nfa G305 over East Towne Rd. E. / I640, 1.7 M NW Of I640-i40 Jct.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT216 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

216 ft end to end, longest span 108 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 box-beam bridge.

Built198145 years old
Length215.9 ft65.8 m
Daily traffic200counted 2020
Last inspectedApril 2024every 24 months

Location

StateTennessee
CountyKnox
Location1.7 M NW Of I640-i40 Jct
CarriesNfa G305
CrossesEast Towne Rd. E. / I640
Coordinates36.03074, -83.87869

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length215.9 ft (65.8 m)
Max Span107.9 ft (32.9 m)
Deck Width58.7 ft (17.9 m)
Deck Area1177.8 sq m
Main Spans2
Year Built1981

Traffic

Avg Daily Traffic200 (2020)
Truck Traffic2%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47I06400025

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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