US Bridges

Nfa 921 (sa 6802) over Buffalo River

PoorPosted for load

Perry County, Tennessee · 0.2 M. S. Linden. · Structure no. 68F02430001

Built
1958
67 years old
Condition
Poor
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
694 ft
3 main spans
Daily traffic
1,475
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa 921 (sa 6802) over Buffalo River is a concrete continuous tee beam carrying Nfa 921 (sa 6802) over Buffalo River in Perry County, Tennessee. It was built in 1958, so it is 67 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,475 vehicles a day, roughly 3% of them trucks, projected to reach 1,123 by 2042. The structure is 694 ft (211.5 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNfa 921 (sa 6802)
CrossesBuffalo River
Location0.2 M. S. Linden.
RouteCity Street 921
CountyPerry County
StateTennessee
Coordinates35.60462, -87.83905
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+18 approach)
Design loadHS 20
Structure length694 ft (211.5 m)
Longest span59 ft (18.1 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,475 (2021)
Projected traffic1,123 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 921 (sa 6802) over Buffalo River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Nfa 921 (sa 6802) over Buffalo River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Nfa 921 (sa 6802) over Buffalo River carry?

About 1,475 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 921 (sa 6802) over Buffalo River?

The structure is 694 ft (211.5 m) long with a longest span of 59 ft (18.1 m) and a deck 34 ft wide.

Who owns Nfa 921 (sa 6802) over Buffalo River?

It is owned by the City or Municipal Highway Agency.