US Bridges

Nfa A645 over Sequatchie River

PoorPosted for load

Cumberland County, Tennessee · 1 Mile East of US-127 · Structure no. 180A6450001

Built
1974
51 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
100
2022 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Nfa A645 over Sequatchie River is a steel stringer/multi-beam or girder carrying Nfa A645 over Sequatchie River in Cumberland County, Tennessee. It was built in 1974, so it is 51 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 160 by 2042. The structure is 23 ft (7.1 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A645
CrossesSequatchie River
Location1 Mile East of US-127
RouteState Lands Road 0A645
Coordinates35.7915, -85.00931
Functional classRural Local

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating11.5 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7.1 m)
Longest span23 ft (7.1 m)
Deck width13 ft (4.1 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A645 over Sequatchie River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Nfa A645 over Sequatchie 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 February 2024.

How much traffic does Nfa A645 over Sequatchie River carry?

About 100 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Nfa A645 over Sequatchie River?

The structure is 23 ft (7.1 m) long with a longest span of 23 ft (7.1 m) and a deck 13 ft wide.

Who owns Nfa A645 over Sequatchie River?

It is owned by the State Park, Forest, or Reservation Agency.