US Bridges

I40 over Bolling Branch & Priv. R

Fair

Smith County, Tennessee · In Smith Co. · Structure no. 80I00400024

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
126 ft
2 main spans
Daily traffic
44,898
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over Bolling Branch & Priv. R is a prestressed concrete box beam or girders - multiple carrying I40 over Bolling Branch & Priv. R in Smith County, Tennessee. It was built in 1962, so it is 63 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.

It carries about 44,898 vehicles a day, roughly 7% of them trucks, projected to reach 65,931 by 2041. The structure is 126 ft (38.4 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI40
CrossesBolling Branch & Priv. R
LocationIn Smith Co.
RouteInterstate 40
CountySmith County
StateTennessee
Coordinates36.16415, -85.89404
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span62 ft (18.9 m)
Deck width47 ft (14.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,898 (2021)
Projected traffic65,931 by 2041
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$89,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I40 over Bolling Branch & Priv. R built?

It was built in 1962, making it 63 years old in 2025.

What condition is I40 over Bolling Branch & Priv. R 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 I40 over Bolling Branch & Priv. R carry?

About 44,898 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I40 over Bolling Branch & Priv. R?

The structure is 126 ft (38.4 m) long with a longest span of 62 ft (18.9 m) and a deck 47 ft wide.

Who owns I40 over Bolling Branch & Priv. R?

It is owned by the State Highway Agency.