US Bridges

Nfa A374 (sa 0205) over Duck River

Fair

Bedford County, Tennessee · 5 M. S. Unionville. · Structure no. 020A3740003

Built
1960
65 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
279 ft
6 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A374 (sa 0205) over Duck River is a steel stringer/multi-beam or girder carrying Nfa A374 (sa 0205) over Duck River in Bedford County, Tennessee. It was built in 1960, so it is 65 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2041. The structure is 279 ft (85.1 m) long and 23 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesNfa A374 (sa 0205)
CrossesDuck River
Location5 M. S. Unionville.
RouteCounty Highway 374
CountyBedford County
StateTennessee
Coordinates35.55289, -86.5821
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length279 ft (85.1 m)
Longest span51 ft (15.6 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic400 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$724,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A374 (sa 0205) over Duck River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa A374 (sa 0205) over Duck River 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 December 2024.

How much traffic does Nfa A374 (sa 0205) over Duck River carry?

About 250 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A374 (sa 0205) over Duck River?

The structure is 279 ft (85.1 m) long with a longest span of 51 ft (15.6 m) and a deck 23 ft wide.

Who owns Nfa A374 (sa 0205) over Duck River?

It is owned by the County Highway Agency.