US Bridges

I40 Lf LN over Nfa 1226

Fair

Roane County, Tennessee · 1.6 M SE JCT I40&SR29 · Structure no. 73I00400012

Built
1969
56 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
49,070
2021 count
Owner
State
State Highway Agency

About this bridge

I40 Lf LN over Nfa 1226 is a prestressed concrete continuous stringer/multi-beam or girder carrying I40 Lf LN over Nfa 1226 in Roane County, Tennessee. It was built in 1969, so it is 56 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 49,070 vehicles a day, roughly 6% of them trucks, projected to reach 75,792 by 2040. The structure is 121 ft (36.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI40 Lf LN
CrossesNfa 1226
Location1.6 M SE JCT I40&SR29
RouteInterstate 40
CountyRoane County
StateTennessee
Coordinates35.89463, -84.53508
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span49 ft (14.9 m)
Deck width43 ft (13 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,070 (2021)
Projected traffic75,792 by 2040
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 Lf LN over Nfa 1226 built?

It was built in 1969, making it 56 years old in 2025.

What condition is I40 Lf LN over Nfa 1226 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 September 2024.

How much traffic does I40 Lf LN over Nfa 1226 carry?

About 49,070 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 Lf LN over Nfa 1226?

The structure is 121 ft (36.9 m) long with a longest span of 49 ft (14.9 m) and a deck 43 ft wide.

Who owns I40 Lf LN over Nfa 1226?

It is owned by the State Highway Agency.