US Bridges

Nfa A639 over Cedar Creek

Good

Roane County, Tennessee · W Off SR322-2.6 M N of Cl · Structure no. 730A3320001

Built
1983
42 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
140
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A639 over Cedar Creek is a concrete continuous culvert carrying Nfa A639 over Cedar Creek in Roane County, Tennessee. It was built in 1983, so it is 42 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 140 vehicles a day, roughly 2% of them trucks, projected to reach 224 by 2041. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa A639
CrossesCedar Creek
LocationW Off SR322-2.6 M N of Cl
RouteCounty Highway 639
Coordinates35.6993, -84.53529
Functional classRural 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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width26 ft (8 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2020)
Projected traffic224 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 A639 over Cedar Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Nfa A639 over Cedar 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 April 2023.

How much traffic does Nfa A639 over Cedar Creek carry?

About 140 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A639 over Cedar Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa A639 over Cedar Creek?

It is owned by the County Highway Agency.