US Bridges

SR1103 over Silvermine Creek

Fair

Swain County, North Carolina · 0.3MI.S.JCT.US19 74 · Structure no. 000000001730065

Built
2019
6 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
320
2019 count
Owner
State
State Highway Agency

About this bridge

SR1103 over Silvermine Creek is a steel stringer/multi-beam or girder carrying SR1103 over Silvermine Creek in Swain County, North Carolina. It was built in 2019, so it is 6 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 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 320 vehicles a day, roughly 6% of them trucks, projected to reach 640 by 2040. The structure is 40 ft (12.1 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR1103
CrossesSilvermine Creek
Location0.3MI.S.JCT.US19 74
RouteState Highway 1103
CountySwain County
StateNorth Carolina
Coordinates35.32731, -83.59376
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length40 ft (12.1 m)
Longest span39 ft (11.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2019)
Projected traffic640 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 SR1103 over Silvermine Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is SR1103 over Silvermine 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 August 2023.

How much traffic does SR1103 over Silvermine Creek carry?

About 320 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is SR1103 over Silvermine Creek?

The structure is 40 ft (12.1 m) long with a longest span of 39 ft (11.8 m) and a deck 26 ft wide.

Who owns SR1103 over Silvermine Creek?

It is owned by the State Highway Agency.