Structure 47SR1680001 · Knox County, TN

Nfa D942 over Dick Ford Road / SR 168

Carries Nfa D942 over Dick Ford Road / SR 168, Just W Of Us441-sr168.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT147 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

147 ft end to end: about 2 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.

Built197353 years old
Length147.3 ft44.9 m
Daily traffic780counted 2020
Last inspectedFebruary 2024every 24 months

Location

StateTennessee
CountyKnox
LocationJust W Of Us441-sr168
CarriesNfa D942
CrossesDick Ford Road / SR 168
Coordinates35.90085, -83.85630

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length147.3 ft (44.9 m)
Max Span140.4 ft (42.8 m)
Deck Width36.1 ft (11 m)
Deck Area493.9 sq m
Main Spans1
Year Built1973

Traffic

Avg Daily Traffic780 (2020)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number47SR1680001

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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