US Bridges

Nfa 1528 (sa 6616) over Branch

FairPosted for load

Obion County, Tennessee · 2.6 MI NE JCT SR21&SR184 · Structure no. 66015280001

Built
1975
50 years old, rebuilt 2002
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
29 ft
1 main span
Daily traffic
608
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1528 (sa 6616) over Branch is a concrete channel beam carrying Nfa 1528 (sa 6616) over Branch in Obion County, Tennessee. It was built in 1975 and reconstructed in 2002, so it is 50 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 608 vehicles a day, roughly 3% of them trucks, projected to reach 797 by 2041. The structure is 29 ft (8.8 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesNfa 1528 (sa 6616)
CrossesBranch
Location2.6 MI NE JCT SR21&SR184
RouteCounty Highway 1528
CountyObion County
StateTennessee
Coordinates36.36917, -89.14159
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.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating20 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic608 (2021)
Projected traffic797 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$100,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1528 (sa 6616) over Branch built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2002.

What condition is Nfa 1528 (sa 6616) 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 1528 (sa 6616) over Branch carry?

About 608 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1528 (sa 6616) over Branch?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns Nfa 1528 (sa 6616) over Branch?

It is owned by the County Highway Agency.