US Bridges

Nfa 2086 (sa 8510) over Dixon Creek

Fair

Trousdale County, Tennessee · 2 MI W of Smith Co. · Structure no. 85020860003

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
120
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2086 (sa 8510) over Dixon Creek is a prestressed concrete box beam or girders - single or spread carrying Nfa 2086 (sa 8510) over Dixon Creek in Trousdale County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 6 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 120 vehicles a day, roughly 4% of them trucks, projected to reach 240 by 2041. The structure is 53 ft (16.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesNfa 2086 (sa 8510)
CrossesDixon Creek
Location2 MI W of Smith Co.
RouteCounty Highway 2086
CountyTrousdale County
StateTennessee
Coordinates36.39695, -86.03405
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.6 US tons
Inventory rating33.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span49 ft (14.9 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2021)
Projected traffic240 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$130,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2086 (sa 8510) over Dixon Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa 2086 (sa 8510) over Dixon Creek 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 March 2023.

How much traffic does Nfa 2086 (sa 8510) over Dixon Creek carry?

About 120 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nfa 2086 (sa 8510) over Dixon Creek?

The structure is 53 ft (16.2 m) long with a longest span of 49 ft (14.9 m) and a deck 26 ft wide.

Who owns Nfa 2086 (sa 8510) over Dixon Creek?

It is owned by the County Highway Agency.