US Bridges

Nfa A147 over Dumplin Creek

Fair

Sevier County, Tennessee · 1.7 M SE of I40 at Knox C · Structure no. 780A4170001

Built
1935
90 years old, rebuilt 1996
Condition
Fair
inspected July 2023
Type
Channel Beam
Concrete
Length
38 ft
1 main span
Daily traffic
180
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A147 over Dumplin Creek is a concrete channel beam carrying Nfa A147 over Dumplin Creek in Sevier County, Tennessee. It was built in 1935 and reconstructed in 1996, so it is 90 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 6 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 180 vehicles a day, roughly 2% of them trucks, projected to reach 288 by 2041. The structure is 38 ft (11.7 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A147
CrossesDumplin Creek
Location1.7 M SE of I40 at Knox C
RouteCounty Highway 147
CountySevier County
StateTennessee
Coordinates35.96601, -83.63745
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length38 ft (11.7 m)
Longest span35 ft (10.7 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2020)
Projected traffic288 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$145,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A147 over Dumplin Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1996.

What condition is Nfa A147 over Dumplin Creek 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 July 2023.

How much traffic does Nfa A147 over Dumplin Creek carry?

About 180 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A147 over Dumplin Creek?

The structure is 38 ft (11.7 m) long with a longest span of 35 ft (10.7 m) and a deck 22 ft wide.

Who owns Nfa A147 over Dumplin Creek?

It is owned by the County Highway Agency.