US Bridges

Nfa C518 over Reedy Creek

Fair

Sullivan County, Tennessee · Harrtrail Rd-Sw of 11W-37 · Structure no. 820C5180001

Built
1976
49 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
230
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa C518 over Reedy Creek is a prestressed concrete box beam or girders - multiple carrying Nfa C518 over Reedy Creek in Sullivan County, Tennessee. It was built in 1976, so it is 49 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2042. The structure is 43 ft (13 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa C518
CrossesReedy Creek
LocationHarrtrail Rd-Sw of 11W-37
RouteCounty Highway 518
Coordinates36.57457, -82.36643
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span39 ft (11.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2020)
Projected traffic368 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 C518 over Reedy Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Nfa C518 over Reedy 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 January 2024.

How much traffic does Nfa C518 over Reedy Creek carry?

About 230 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa C518 over Reedy Creek?

The structure is 43 ft (13 m) long with a longest span of 39 ft (11.8 m) and a deck 24 ft wide.

Who owns Nfa C518 over Reedy Creek?

It is owned by the County Highway Agency.