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Nearby Bridges in NBI 2021: 1


SR 68 over TENNESSEE RIVER (Route: 68)
Num:72SR0680009x
Open: no restriction [A]
Built: 1956, Reconstructed: 2005
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Girder and floorbeam system [03]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 719.3 m = 2360.0 ft
Main Spans: 20 at 49.1 m = 161.1 ft
Approach Spans: 5
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 10 m = 32.8 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 17.3 m = 56.8 ft
Location
Unknown [00000]: Rhea County [143], Tennessee [47]
Owned by Tennessee Valley Authority [67], DOT District: 2
ON WATTS BAR DAM
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 18 / H 20 [4]
Operating: 49.5 metric ton = 54.5 tons (Load Factor(LF) [1])
Inventory: 29.6 metric ton = 32.6 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 1999 [799] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 5.3 km = 3.3 mi
Traffic
ADT: 4160 (2018) and Trucks: 10%
Future ADT: 7000 (In 2038 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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