US Bridges

Nfa 1224 (sa 7315) over Branch

Fair

Roane County, Tennessee · N of I40-1 Exit W of SR58 · Structure no. 73F00030001

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
45 ft
2 main spans
Daily traffic
899
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1224 (sa 7315) over Branch is a concrete continuous culvert carrying Nfa 1224 (sa 7315) over Branch 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 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 899 vehicles a day, roughly 3% of them trucks, projected to reach 1,438 by 2042. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa 1224 (sa 7315)
CrossesBranch
LocationN of I40-1 Exit W of SR58
RouteCounty Highway 1224
CountyRoane County
StateTennessee
Coordinates35.87469, -84.4595
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length45 ft (13.7 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic899 (2021)
Projected traffic1,438 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1224 (sa 7315) over Branch built?

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

What condition is Nfa 1224 (sa 7315) over Branch 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 April 2023.

How much traffic does Nfa 1224 (sa 7315) over Branch carry?

About 899 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1224 (sa 7315) over Branch?

The structure is 45 ft (13.7 m) long with a longest span of 12 ft (3.7 m).

Who owns Nfa 1224 (sa 7315) over Branch?

It is owned by the County Highway Agency.