US Bridges

Nfa 1321 (sa 1506) over Pigeon River & Nfa A391

Fair

Cocke County, Tennessee · W of I40 @ Waterville Ext · Structure no. 15E00220001

Built
1964
61 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
365 ft
6 main spans
Daily traffic
47
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1321 (sa 1506) over Pigeon River & Nfa A391 is a concrete continuous tee beam carrying Nfa 1321 (sa 1506) over Pigeon River & Nfa A391 in Cocke County, Tennessee. It was built in 1964, so it is 61 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 47 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2042. The structure is 365 ft (111.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa 1321 (sa 1506)
CrossesPigeon River & Nfa A391
LocationW of I40 @ Waterville Ext
RouteCounty Highway 1321
Coordinates35.78465, -83.1135
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 15
Structure length365 ft (111.1 m)
Longest span65 ft (19.8 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47 (2021)
Projected traffic75 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1321 (sa 1506) over Pigeon River & Nfa A391 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Nfa 1321 (sa 1506) over Pigeon River & Nfa A391 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 October 2024.

How much traffic does Nfa 1321 (sa 1506) over Pigeon River & Nfa A391 carry?

About 47 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Nfa 1321 (sa 1506) over Pigeon River & Nfa A391?

The structure is 365 ft (111.1 m) long with a longest span of 65 ft (19.8 m) and a deck 34 ft wide.

Who owns Nfa 1321 (sa 1506) over Pigeon River & Nfa A391?

It is owned by the County Highway Agency.