US Bridges

Nfa A066 347619F over CSX Railroad

PoorPosted for load

Blount County, Tennessee · 1 M. W. Clover Hill · Structure no. 050A0660001

Built
1945
80 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
120
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A066 347619F over CSX Railroad is a steel stringer/multi-beam or girder carrying Nfa A066 347619F over CSX Railroad in Blount County, Tennessee. It was built in 1945, so it is 80 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 3 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 120 vehicles a day, roughly 2% of them trucks, projected to reach 192 by 2042. The structure is 92 ft (28 m) long and 18 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNfa A066 347619F
CrossesCSX Railroad
Location1 M. W. Clover Hill
RouteCounty Highway 66
Coordinates35.70323, -84.06911
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating9.3 US tons
Inventory rating3.5 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1 (+4 approach)
Design loadHS 20
Structure length92 ft (28 m)
Longest span43 ft (13.1 m)
Deck width18 ft (5.4 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2020)
Projected traffic192 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$401,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A066 347619F over CSX Railroad built?

It was built in 1945, making it 80 years old in 2025.

What condition is Nfa A066 347619F over CSX Railroad 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 November 2023.

How much traffic does Nfa A066 347619F over CSX Railroad carry?

About 120 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A066 347619F over CSX Railroad?

The structure is 92 ft (28 m) long with a longest span of 43 ft (13.1 m) and a deck 18 ft wide.

Who owns Nfa A066 347619F over CSX Railroad?

It is owned by the County Highway Agency.