US Bridges

Nfa E216 over Grassy Creek

Good

Knox County, Tennessee · N Off SR62-S of Central P · Structure no. 470E2160001

Built
1989
36 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
1,100
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa E216 over Grassy Creek is a concrete continuous culvert carrying Nfa E216 over Grassy Creek in Knox County, Tennessee. It was built in 1989, so it is 36 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 1,100 vehicles a day, roughly 2% of them trucks, projected to reach 1,760 by 2040. The structure is 40 ft (12.2 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa E216
CrossesGrassy Creek
LocationN Off SR62-S of Central P
RouteCounty Highway 216
Coordinates35.99132, -84.06133
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.8 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2020)
Projected traffic1,760 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa E216 over Grassy Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Nfa E216 over Grassy Creek 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 May 2024.

How much traffic does Nfa E216 over Grassy Creek carry?

About 1,100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa E216 over Grassy Creek?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.8 m) and a deck 40 ft wide.

Who owns Nfa E216 over Grassy Creek?

It is owned by the County Highway Agency.