Structure 47I00400071 · Knox County, TN

Fap 115 Ramp over Sr115-eb Rmp/i40&21st.

Carries Fap 115 Ramp over Sr115-eb Rmp/i40&21st., 1 Mi W Jct I40&i275.

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 FT666 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

666 ft end to end, longest span 105 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.

Built198145 years old
Length666.0 ft203 m
Daily traffic68,556counted 2021
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyKnox
Location1 Mi W Jct I40&i275
CarriesFap 115 Ramp
CrossesSr115-eb Rmp/i40&21st.
Coordinates35.96225, -83.94315

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length666.0 ft (203 m)
Max Span105.0 ft (32 m)
Deck Width44.0 ft (13.4 m)
Deck Area2720.2 sq m
Main Spans7
Year Built1981

Traffic

Avg Daily Traffic68,556 (2021)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47I00400071

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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