US Bridges

Nfa A364 over Collins River

Fair

Warren County, Tennessee · 3MI East of SR56 · Structure no. 890A3640001

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
240 ft
4 main spans
Daily traffic
210
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A364 over Collins River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A364 over Collins River in Warren County, Tennessee. It was built in 1978, so it is 47 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 210 vehicles a day, roughly 2% of them trucks, projected to reach 336 by 2042. The structure is 240 ft (73.2 m) long and 26 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesNfa A364
CrossesCollins River
Location3MI East of SR56
RouteCounty Highway 364
CountyWarren County
StateTennessee
Coordinates35.6181, -85.68512
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 alignment6: Equal to present minimum criteria
Operating rating48.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span56 ft (17.1 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2020)
Projected traffic336 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A364 over Collins River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Nfa A364 over Collins 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 March 2023.

How much traffic does Nfa A364 over Collins River carry?

About 210 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A364 over Collins River?

The structure is 240 ft (73.2 m) long with a longest span of 56 ft (17.1 m) and a deck 26 ft wide.

Who owns Nfa A364 over Collins River?

It is owned by the County Highway Agency.