US Bridges

Nfa 1707 (sa 0917) over Overflow

Fair

Carroll County, Tennessee · 3.0 MI SE JCT SR1&SR114 · Structure no. 09017070003

Built
1989
36 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
849
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1707 (sa 0917) over Overflow is a concrete continuous culvert carrying Nfa 1707 (sa 0917) over Overflow in Carroll County, Tennessee. It was built in 1989, so it is 36 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 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 849 vehicles a day, roughly 3% of them trucks, projected to reach 1,120 by 2039. The structure is 26 ft (7.9 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesNfa 1707 (sa 0917)
CrossesOverflow
Location3.0 MI SE JCT SR1&SR114
RouteCounty Highway 1707
CountyCarroll County
StateTennessee
Coordinates36.00225, -88.24384
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic849 (2021)
Projected traffic1,120 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 1707 (sa 0917) over Overflow built?

It was built in 1989, making it 36 years old in 2025.

What condition is Nfa 1707 (sa 0917) over Overflow 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 August 2023.

How much traffic does Nfa 1707 (sa 0917) over Overflow carry?

About 849 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1707 (sa 0917) over Overflow?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 32 ft wide.

Who owns Nfa 1707 (sa 0917) over Overflow?

It is owned by the County Highway Agency.