US Bridges

Nfa 1536 (sa 6619) over Overflow

FairPosted for load

Obion County, Tennessee · 5.8 MI SE JCT SR3&SR21 · Structure no. 66015360011

Built
2002
23 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
29 ft
1 main span
Daily traffic
266
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1536 (sa 6619) over Overflow is a concrete channel beam carrying Nfa 1536 (sa 6619) over Overflow in Obion County, Tennessee. It was built in 2002, so it is 23 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. Its operating status is: posted for load restriction.

It carries about 266 vehicles a day, roughly 3% of them trucks, projected to reach 456 by 2042. The structure is 29 ft (8.7 m) long and 25 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNfa 1536 (sa 6619)
CrossesOverflow
Location5.8 MI SE JCT SR3&SR21
RouteCounty Highway 1536
CountyObion County
StateTennessee
Coordinates36.44383, -88.94214
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.3 US tons
Inventory rating15 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length29 ft (8.7 m)
Longest span29 ft (8.7 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic266 (2021)
Projected traffic456 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$89,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1536 (sa 6619) over Overflow built?

It was built in 2002, making it 23 years old in 2025.

What condition is Nfa 1536 (sa 6619) 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 March 2023.

How much traffic does Nfa 1536 (sa 6619) over Overflow carry?

About 266 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1536 (sa 6619) over Overflow?

The structure is 29 ft (8.7 m) long with a longest span of 29 ft (8.7 m) and a deck 25 ft wide.

Who owns Nfa 1536 (sa 6619) over Overflow?

It is owned by the County Highway Agency.