US Bridges

Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv

FairPosted for load

Gibson County, Tennessee · 2.4 MI NE JCT SR43&SR105 · Structure no. 27016020001

Built
1974
51 years old
Condition
Fair
inspected July 2023
Type
Channel Beam
Concrete
Length
75 ft
4 main spans
Daily traffic
162
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv is a concrete channel beam carrying Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv in Gibson County, Tennessee. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.

It carries about 162 vehicles a day, roughly 3% of them trucks, projected to reach 259 by 2042. The structure is 75 ft (22.9 m) long and 25 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesNfa 1602 (sa 2728)
CrossesOverflow S Fork Obion Rv
Location2.4 MI NE JCT SR43&SR105
RouteCounty Highway 1602
Coordinates36.09475, -88.75083
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2021)
Projected traffic259 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$874,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv built?

It was built in 1974, making it 51 years old in 2025.

What condition is Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv 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 July 2023.

How much traffic does Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv carry?

About 162 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv?

The structure is 75 ft (22.9 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns Nfa 1602 (sa 2728) over Overflow S Fork Obion Rv?

It is owned by the County Highway Agency.