US Bridges

Nfa A842 over Gap Rd. / I75

Good

Knox County, Tennessee · Just W of Sharps Gap · Structure no. 47I00750023

Built
1981
44 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
220 ft
2 main spans
Daily traffic
4,810
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A842 over Gap Rd. / I75 is a concrete continuous box beam or girders - multiple carrying Nfa A842 over Gap Rd. / I75 in Knox County, Tennessee. It was built in 1981, so it is 44 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,810 vehicles a day, roughly 2% of them trucks, projected to reach 7,696 by 2041. The structure is 220 ft (67.1 m) long and 46 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A842
CrossesGap Rd. / I75
LocationJust W of Sharps Gap
RouteCity Street 842
CountyKnox County
StateTennessee
Coordinates35.99423, -83.96648
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span110 ft (33.5 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,810 (2020)
Projected traffic7,696 by 2041
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$2.7 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A842 over Gap Rd. / I75 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nfa A842 over Gap Rd. / I75 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Nfa A842 over Gap Rd. / I75 carry?

About 4,810 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A842 over Gap Rd. / I75?

The structure is 220 ft (67.1 m) long with a longest span of 110 ft (33.5 m) and a deck 46 ft wide.

Who owns Nfa A842 over Gap Rd. / I75?

It is owned by the State Highway Agency.