US Bridges

Nfa A301 over Branch

PoorPosted for load

Madison County, Tennessee · 4.5 MI NE JCT SR5&SR18 · Structure no. 570A3010001

Built
1970
55 years old
Condition
Poor
inspected May 2023
Type
Channel Beam
Concrete
Length
59 ft
3 main spans
Daily traffic
430
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A301 over Branch is a concrete channel beam carrying Nfa A301 over Branch in Madison County, Tennessee. It was built in 1970, so it is 55 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 430 vehicles a day, roughly 8% of them trucks, projected to reach 688 by 2042. The structure is 59 ft (17.9 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNfa A301
CrossesBranch
Location4.5 MI NE JCT SR5&SR18
RouteCounty Highway 301
CountyMadison County
StateTennessee
Coordinates35.58578, -88.74097
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating19.6 US tons
Inventory rating11.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length59 ft (17.9 m)
Longest span20 ft (6 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic430 (2020)
Projected traffic688 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$169,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A301 over Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A301 over Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Nfa A301 over Branch carry?

About 430 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Nfa A301 over Branch?

The structure is 59 ft (17.9 m) long with a longest span of 20 ft (6 m) and a deck 25 ft wide.

Who owns Nfa A301 over Branch?

It is owned by the County Highway Agency.