US Bridges

Nfa 1230 (sa 7321) over Indian Creek

Fair

Roane County, Tennessee · 1 M S of SR 61-SR 62 JCT · Structure no. 73S24730005

Built
1970
55 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
142 ft
3 main spans
Daily traffic
1,249
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa 1230 (sa 7321) over Indian Creek is a steel continuous stringer/multi-beam or girder carrying Nfa 1230 (sa 7321) over Indian Creek in Roane County, Tennessee. It was built in 1970, so it is 55 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 6 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 1,249 vehicles a day, roughly 1% of them trucks, projected to reach 1,795 by 2042. The structure is 142 ft (43.3 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1230 (sa 7321)
CrossesIndian Creek
Location1 M S of SR 61-SR 62 JCT
RouteCounty Highway 1230
CountyRoane County
StateTennessee
Coordinates36.04245, -84.34908
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length142 ft (43.3 m)
Longest span52 ft (15.8 m)
Deck width37 ft (11.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,249 (2021)
Projected traffic1,795 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1230 (sa 7321) over Indian Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa 1230 (sa 7321) over Indian Creek 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 March 2023.

How much traffic does Nfa 1230 (sa 7321) over Indian Creek carry?

About 1,249 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 1230 (sa 7321) over Indian Creek?

The structure is 142 ft (43.3 m) long with a longest span of 52 ft (15.8 m) and a deck 37 ft wide.

Who owns Nfa 1230 (sa 7321) over Indian Creek?

It is owned by the City or Municipal Highway Agency.