US Bridges

Nfa 1630 (sa 5720) over Branch

FairPosted for load

Madison County, Tennessee · 1.7 MI NE JCT SR18&HARDEM · Structure no. 57016300003

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
2 main spans
Daily traffic
646
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1630 (sa 5720) over Branch is a steel stringer/multi-beam or girder carrying Nfa 1630 (sa 5720) 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 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 646 vehicles a day, roughly 3% of them trucks, projected to reach 781 by 2042. The structure is 31 ft (9.4 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 1630 (sa 5720)
CrossesBranch
Location1.7 MI NE JCT SR18&HARDEM
RouteCounty Highway 1630
CountyMadison County
StateTennessee
Coordinates35.44478, -88.85597
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be 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 rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length31 ft (9.4 m)
Longest span16 ft (4.9 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic646 (2021)
Projected traffic781 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$506,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1630 (sa 5720) over Branch built?

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

What condition is Nfa 1630 (sa 5720) 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 May 2023.

How much traffic does Nfa 1630 (sa 5720) over Branch carry?

About 646 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1630 (sa 5720) over Branch?

The structure is 31 ft (9.4 m) long with a longest span of 16 ft (4.9 m) and a deck 25 ft wide.

Who owns Nfa 1630 (sa 5720) over Branch?

It is owned by the County Highway Agency.