Structure 47I00400045 · Knox County, TN

I40 347572m over Middlebrook/rr/e 3rd Ck

Carries I40 347572m over Middlebrook/rr/e 3rd Ck, .6 M NE Of Westview AVE.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT695 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

695 ft end to end, longest span 133 ft: about 1.9 football fields. 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.

Built1965rebuilt 2001
Length694.9 ft211.8 m
Daily traffic122,506counted 2021
Last inspectedDecember 2024every 24 months

Location

StateTennessee
CountyKnox
Location.6 M NE Of Westview AVE
CarriesI40 347572m
CrossesMiddlebrook/rr/e 3rd Ck
Coordinates35.96192, -83.95323

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length694.9 ft (211.8 m)
Max Span132.9 ft (40.5 m)
Deck Width213.3 ft (65 m)
Deck Area13,767 sq m
Main Spans3
Year Built1965 (reconstructed 2001)

Traffic

Avg Daily Traffic122,506 (2021)
Truck Traffic6%
Lanes On Bridge11
Lanes Under Bridge4

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47I00400045

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