US Bridges

Nfa 1602 (sa 9205) over S. Fork Obion River

Fair

Weakley County, Tennessee · 0.1 MI E of Gibson CO · Structure no. 92016020001

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
629 ft
10 main spans
Daily traffic
162
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1602 (sa 9205) over S. Fork Obion River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 1602 (sa 9205) over S. Fork Obion River in Weakley County, Tennessee. It was built in 1976, so it is 49 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 162 vehicles a day, roughly 3% of them trucks, projected to reach 128 by 2040. The structure is 629 ft (191.7 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesNfa 1602 (sa 9205)
CrossesS. Fork Obion River
Location0.1 MI E of Gibson CO
RouteCounty Highway 1602
CountyWeakley County
StateTennessee
Coordinates36.09735, -88.74566
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
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 rating56.4 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length629 ft (191.7 m)
Longest span75 ft (22.9 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2021)
Projected traffic128 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 1602 (sa 9205) over S. Fork Obion River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Nfa 1602 (sa 9205) over S. Fork Obion River 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 October 2024.

How much traffic does Nfa 1602 (sa 9205) over S. Fork Obion River carry?

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

How long is Nfa 1602 (sa 9205) over S. Fork Obion River?

The structure is 629 ft (191.7 m) long with a longest span of 75 ft (22.9 m) and a deck 30 ft wide.

Who owns Nfa 1602 (sa 9205) over S. Fork Obion River?

It is owned by the County Highway Agency.