US Bridges

SR1146 over Hiawassee River

Fair

Clay County, North Carolina · 1 MI.S.JCT.SR1140 · Structure no. 000000000430064

Built
1922
103 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
169 ft
4 main spans
Daily traffic
350
2015 count
Owner
State
State Highway Agency

About this bridge

SR1146 over Hiawassee River is a concrete tee beam carrying SR1146 over Hiawassee River in Clay County, North Carolina. It was built in 1922, so it is 103 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 350 vehicles a day, roughly 6% of them trucks, projected to reach 700 by 2040. The structure is 169 ft (51.5 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR1146
CrossesHiawassee River
Location1 MI.S.JCT.SR1140
RouteState Highway 1146
CountyClay County
StateNorth Carolina
Coordinates35.02314, -83.78992
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.9 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length169 ft (51.5 m)
Longest span41 ft (12.4 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2015)
Projected traffic700 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1146 over Hiawassee River built?

It was built in 1922, making it 103 years old in 2025.

What condition is SR1146 over Hiawassee River 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 May 2024.

How much traffic does SR1146 over Hiawassee River carry?

About 350 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is SR1146 over Hiawassee River?

The structure is 169 ft (51.5 m) long with a longest span of 41 ft (12.4 m) and a deck 20 ft wide.

Who owns SR1146 over Hiawassee River?

It is owned by the State Highway Agency.