US Bridges

I65 over Summers Branch

Fair

Robertson County, Tennessee · 1.4 M S CO LN · Structure no. 74I00650039

Built
1967
58 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
48 ft
3 main spans
Daily traffic
50,426
2021 count
Owner
State
State Highway Agency

About this bridge

I65 over Summers Branch is a concrete continuous culvert carrying I65 over Summers Branch in Robertson County, Tennessee. It was built in 1967, so it is 58 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 50,426 vehicles a day, roughly 7% of them trucks, projected to reach 74,944 by 2040. The structure is 48 ft (14.6 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesI65
CrossesSummers Branch
Location1.4 M S CO LN
RouteInterstate I0065
CountyRobertson County
StateTennessee
Coordinates36.62523, -86.57525
Functional classUrban Principal Arterial - Interstate

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,426 (2021)
Projected traffic74,944 by 2040
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$718,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I65 over Summers Branch built?

It was built in 1967, making it 58 years old in 2025.

What condition is I65 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 March 2024.

How much traffic does I65 over Summers Branch carry?

About 50,426 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I65 over Summers Branch?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.6 m).

Who owns I65 over Summers Branch?

It is owned by the State Highway Agency.