US Bridges

FAU 3789 Ll over Ll-Heiskell Ave. / I275

Fair

Knox County, Tennessee · 0.6 MI S. of Sharps Gap · Structure no. 47I02750012

Built
1959
66 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
273 ft
6 main spans
Daily traffic
12,922
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 3789 Ll over Ll-Heiskell Ave. / I275 is a concrete tee beam carrying FAU 3789 Ll over Ll-Heiskell Ave. / I275 in Knox County, Tennessee. It was built in 1959, so it is 66 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 12,922 vehicles a day, roughly 3% of them trucks, projected to reach 18,128 by 2041. The structure is 273 ft (83.3 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAU 3789 Ll
CrossesLl-Heiskell Ave. / I275
Location0.6 MI S. of Sharps Gap
RouteCity Street 3789
CountyKnox County
StateTennessee
Coordinates35.9914, -83.95175
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating34.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length273 ft (83.3 m)
Longest span55 ft (16.8 m)
Deck width47 ft (14.4 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,922 (2021)
Projected traffic18,128 by 2041
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$2.8 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 3789 Ll over Ll-Heiskell Ave. / I275 built?

It was built in 1959, making it 66 years old in 2025.

What condition is FAU 3789 Ll over Ll-Heiskell Ave. / I275 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 October 2024.

How much traffic does FAU 3789 Ll over Ll-Heiskell Ave. / I275 carry?

About 12,922 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 3789 Ll over Ll-Heiskell Ave. / I275?

The structure is 273 ft (83.3 m) long with a longest span of 55 ft (16.8 m) and a deck 47 ft wide.

Who owns FAU 3789 Ll over Ll-Heiskell Ave. / I275?

It is owned by the State Highway Agency.