US Bridges

I40 349207A over CSX RR & County Road

Fair

Smith County, Tennessee · In Smith CO · Structure no. 80I00400017

Built
1962
63 years old, rebuilt 1985
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
224 ft
4 main spans
Daily traffic
44,898
2021 count
Owner
State
State Highway Agency

About this bridge

I40 349207A over CSX RR & County Road is a prestressed concrete continuous box beam or girders - single or spread carrying I40 349207A over CSX RR & County Road in Smith County, Tennessee. It was built in 1962 and reconstructed in 1985, 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 71,837 by 2042. The structure is 224 ft (68.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI40 349207A
CrossesCSX RR & County Road
LocationIn Smith CO
RouteInterstate 40
CountySmith County
StateTennessee
Coordinates36.17698, -85.93546
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating16.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 20 + Mod
Structure length224 ft (68.3 m)
Longest span57 ft (17.4 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,898 (2021)
Projected traffic71,837 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 349207A over CSX RR & County Road built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1985.

What condition is I40 349207A over CSX RR & County Road 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 349207A over CSX RR & County Road carry?

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

How long is I40 349207A over CSX RR & County Road?

The structure is 224 ft (68.3 m) long with a longest span of 57 ft (17.4 m) and a deck 44 ft wide.

Who owns I40 349207A over CSX RR & County Road?

It is owned by the State Highway Agency.