US Bridges

Nfa A143 over Summers Branch

Fair

Robertson County, Tennessee · 4.2 MI NW JCT I65&SR52 · Structure no. 740A1430001

Built
1922
103 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
49 ft
3 main spans
Daily traffic
160
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A143 over Summers Branch is a concrete continuous culvert carrying Nfa A143 over Summers Branch in Robertson County, Tennessee. It was built in 1922, so it is 103 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 160 vehicles a day, roughly 2% of them trucks, projected to reach 256 by 2042. The structure is 49 ft (14.9 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa A143
CrossesSummers Branch
Location4.2 MI NW JCT I65&SR52
RouteCounty Highway 0A143
CountyRobertson County
StateTennessee
Coordinates36.6385, -86.65173
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length49 ft (14.9 m)
Longest span16 ft (4.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2020)
Projected traffic256 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 A143 over Summers Branch built?

It was built in 1922, making it 103 years old in 2025.

What condition is Nfa A143 over Summers 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 April 2024.

How much traffic does Nfa A143 over Summers Branch carry?

About 160 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A143 over Summers Branch?

The structure is 49 ft (14.9 m) long with a longest span of 16 ft (4.9 m) and a deck 26 ft wide.

Who owns Nfa A143 over Summers Branch?

It is owned by the County Highway Agency.