US Bridges

Nfa A604 over Spivey Creek

GoodPosted for load

Unicoi County, Tennessee · 3MI of Ernestville · Structure no. 860A6040001

Built
2007
18 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A604 over Spivey Creek is a steel stringer/multi-beam or girder carrying Nfa A604 over Spivey Creek in Unicoi County, Tennessee. It was built in 2007, so it is 18 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 1% of them trucks, projected to reach 16 by 2042. The structure is 32 ft (9.7 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A604
CrossesSpivey Creek
Location3MI of Ernestville
RouteCounty Highway 604
CountyUnicoi County
StateTennessee
Coordinates36.04554, -82.49998
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13.2 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length32 ft (9.7 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic16 by 2042
Trucks1%
Lanes on structure2
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$104,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A604 over Spivey Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Nfa A604 over Spivey Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Nfa A604 over Spivey Creek carry?

About 10 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A604 over Spivey Creek?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns Nfa A604 over Spivey Creek?

It is owned by the County Highway Agency.