US Bridges

Nfa 1524 (sa 6606) over Branch

FairPosted for load

Obion County, Tennessee · 7.4 MI N of Gibson Co. · Structure no. 66F00250001

Built
1950
75 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
476
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1524 (sa 6606) over Branch is a concrete tee beam carrying Nfa 1524 (sa 6606) over Branch in Obion County, Tennessee. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 476 vehicles a day, roughly 3% of them trucks, projected to reach 762 by 2042. The structure is 33 ft (10.1 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNfa 1524 (sa 6606)
CrossesBranch
Location7.4 MI N of Gibson Co.
RouteCounty Highway 1524
CountyObion County
StateTennessee
Coordinates36.30289, -89.13058
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length33 ft (10.1 m)
Longest span33 ft (10.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic476 (2021)
Projected traffic762 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$121,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1524 (sa 6606) over Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa 1524 (sa 6606) 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 March 2023.

How much traffic does Nfa 1524 (sa 6606) over Branch carry?

About 476 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1524 (sa 6606) over Branch?

The structure is 33 ft (10.1 m) long with a longest span of 33 ft (10.1 m) and a deck 25 ft wide.

Who owns Nfa 1524 (sa 6606) over Branch?

It is owned by the County Highway Agency.