US Bridges

Nfa 1223 (sa 7008) over Hiwassee River

Fair

Polk County, Tennessee · 2.1 MI NW JCT SR33&SR314 · Structure no. 70S43130009

Built
1994
31 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
392 ft
3 main spans
Daily traffic
1,403
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1223 (sa 7008) over Hiwassee River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 1223 (sa 7008) over Hiwassee River in Polk County, Tennessee. It was built in 1994, so it is 31 years old, younger 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 1,403 vehicles a day, roughly 3% of them trucks, projected to reach 2,245 by 2042. The structure is 392 ft (119.5 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 1223 (sa 7008)
CrossesHiwassee River
Location2.1 MI NW JCT SR33&SR314
RouteCounty Highway 1223
CountyPolk County
StateTennessee
Coordinates35.20472, -84.65524
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating64.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length392 ft (119.5 m)
Longest span134 ft (40.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,403 (2021)
Projected traffic2,245 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1223 (sa 7008) over Hiwassee River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Nfa 1223 (sa 7008) over Hiwassee 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 June 2024.

How much traffic does Nfa 1223 (sa 7008) over Hiwassee River carry?

About 1,403 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1223 (sa 7008) over Hiwassee River?

The structure is 392 ft (119.5 m) long with a longest span of 134 ft (40.8 m) and a deck 30 ft wide.

Who owns Nfa 1223 (sa 7008) over Hiwassee River?

It is owned by the County Highway Agency.