US Bridges

I81 over Chapel RD (A321)

Good

Greene County, Tennessee · 10.63M.FROM Washington CO · Structure no. 30I00810052

Built
1971
54 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
116 ft
3 main spans
Daily traffic
37,804
2021 count
Owner
State
State Highway Agency

About this bridge

I81 over Chapel RD (A321) is a concrete continuous tee beam carrying I81 over Chapel RD (A321) in Greene County, Tennessee. It was built in 1971, so it is 54 years old, older 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 37,804 vehicles a day, roughly 6% of them trucks, projected to reach 50,064 by 2040. The structure is 116 ft (35.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI81
CrossesChapel RD (A321)
Location10.63M.FROM Washington CO
RouteInterstate 81
Coordinates36.33572, -82.8112
Functional classRural Principal Arterial - Interstate

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating58.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length116 ft (35.5 m)
Longest span57 ft (17.4 m)
Deck width45 ft (13.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,804 (2021)
Projected traffic50,064 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I81 over Chapel RD (A321) built?

It was built in 1971, making it 54 years old in 2025.

What condition is I81 over Chapel RD (A321) 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 July 2024.

How much traffic does I81 over Chapel RD (A321) carry?

About 37,804 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I81 over Chapel RD (A321)?

The structure is 116 ft (35.5 m) long with a longest span of 57 ft (17.4 m) and a deck 45 ft wide.

Who owns I81 over Chapel RD (A321)?

It is owned by the State Highway Agency.