US Bridges

Nfa 1788 (sa 6803) over Buffalo River

Fair

Perry County, Tennessee · 8 M. N. Flatwoods. · Structure no. 68017880003

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
746 ft
11 main spans
Daily traffic
298
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1788 (sa 6803) over Buffalo River is a steel continuous stringer/multi-beam or girder carrying Nfa 1788 (sa 6803) over Buffalo River in Perry County, Tennessee. It was built in 1968, so it is 57 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 298 vehicles a day, roughly 3% of them trucks, projected to reach 459 by 2041. The structure is 746 ft (227.4 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa 1788 (sa 6803)
CrossesBuffalo River
Location8 M. N. Flatwoods.
RouteCounty Highway 1788
CountyPerry County
StateTennessee
Coordinates35.54467, -87.81993
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
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 rating42.5 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length746 ft (227.4 m)
Longest span96 ft (29.3 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic298 (2021)
Projected traffic459 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.1 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1788 (sa 6803) over Buffalo River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Nfa 1788 (sa 6803) over Buffalo 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 May 2023.

How much traffic does Nfa 1788 (sa 6803) over Buffalo River carry?

About 298 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1788 (sa 6803) over Buffalo River?

The structure is 746 ft (227.4 m) long with a longest span of 96 ft (29.3 m) and a deck 28 ft wide.

Who owns Nfa 1788 (sa 6803) over Buffalo River?

It is owned by the County Highway Agency.