US Bridges

Nfa 1006 (sa 9517) over Old Hickory Lake

Fair

Wilson County, Tennessee · 3.4 MI NW JCT SR24& SR171 · Structure no. 95F00010001

Built
1945
80 years old, rebuilt 1985
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
104 ft
2 main spans
Daily traffic
7,537
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1006 (sa 9517) over Old Hickory Lake is a steel stringer/multi-beam or girder carrying Nfa 1006 (sa 9517) over Old Hickory Lake in Wilson County, Tennessee. It was built in 1945 and reconstructed in 1985, so it is 80 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,537 vehicles a day, roughly 3% of them trucks, projected to reach 12,768 by 2041. The structure is 104 ft (31.7 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesNfa 1006 (sa 9517)
CrossesOld Hickory Lake
Location3.4 MI NW JCT SR24& SR171
RouteCounty Highway 1006
CountyWilson County
StateTennessee
Coordinates36.24563, -86.57185
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length104 ft (31.7 m)
Longest span53 ft (16.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,537 (2021)
Projected traffic12,768 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$505,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1006 (sa 9517) over Old Hickory Lake built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1985.

What condition is Nfa 1006 (sa 9517) over Old Hickory Lake in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Nfa 1006 (sa 9517) over Old Hickory Lake carry?

About 7,537 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1006 (sa 9517) over Old Hickory Lake?

The structure is 104 ft (31.7 m) long with a longest span of 53 ft (16.2 m) and a deck 32 ft wide.

Who owns Nfa 1006 (sa 9517) over Old Hickory Lake?

It is owned by the County Highway Agency.