US Bridges

Reservation Road over Fontana Dam Coffer Dam

Good

Swain County, North Carolina · On Fontana Dam · Structure no. 05G000000991880

Built
1999
26 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
390
2021 count
Owner
Federal
Tennessee Valley Authority

About this bridge

Reservation Road over Fontana Dam Coffer Dam is a prestressed concrete box beam or girders - multiple carrying Reservation Road over Fontana Dam Coffer Dam in Swain County, North Carolina. It was built in 1999, so it is 26 years old, younger than the North Carolina average of 38.7 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 390 vehicles a day, roughly 1% of them trucks, projected to reach 500 by 2041. The structure is 22 ft (6.6 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesReservation Road
CrossesFontana Dam Coffer Dam
LocationOn Fontana Dam
RouteFederal Lands Road 0
Coordinates35.45194, -83.80167
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.1 US tons
Inventory rating25 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width27 ft (8.3 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2021)
Projected traffic500 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRelief for waterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTennessee Valley Authority
Maintained byTennessee Valley Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Reservation Road over Fontana Dam Coffer Dam built?

It was built in 1999, making it 26 years old in 2025.

What condition is Reservation Road over Fontana Dam Coffer Dam 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 March 2024.

How much traffic does Reservation Road over Fontana Dam Coffer Dam carry?

About 390 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Reservation Road over Fontana Dam Coffer Dam?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m) and a deck 27 ft wide.

Who owns Reservation Road over Fontana Dam Coffer Dam?

It is owned by the Tennessee Valley Authority.