Structure 47SR1150027 · Knox County, TN

Fap 115 over Sr115 Rmp / Sr-1 Rmp C

Carries Fap 115 over Sr115 Rmp / Sr-1 Rmp C, 1.4 Mi N. Of Blount Co. L.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT228 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

228 ft end to end, longest span 142 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 multi-beam bridge.

Built200125 years old
Length228.0 ft69.5 m
Daily traffic—reported figure implausible
Last inspectedJanuary 2024every 24 months

Location

StateTennessee
CountyKnox
Location1.4 Mi N. Of Blount Co. L
CarriesFap 115
CrossesSr115 Rmp / Sr-1 Rmp C
Coordinates35.95020, -83.94355

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length228.0 ft (69.5 m)
Max Span142.1 ft (43.3 m)
Deck Width32.2 ft (9.8 m)
Deck Area681.1 sq m
Main Spans3
Year Built2001

Traffic

Avg Daily Traffic62,553 (2021)
That is about 62,553 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic9%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47SR1150027

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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