US Bridges

SR1540 over Williamson Creek

PoorPosted for load

Transylvania County, North Carolina · .2 MI.N.JCT.SR1580 · Structure no. 000000001750040

Built
1976
49 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
3 main spans
Daily traffic
4,000
2024 count
Owner
State
State Highway Agency

About this bridge

SR1540 over Williamson Creek is a steel stringer/multi-beam or girder carrying SR1540 over Williamson Creek in Transylvania County, North Carolina. It was built in 1976, so it is 49 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 4,000 vehicles a day, roughly 7% of them trucks, projected to reach 8,000 by 2040. The structure is 76 ft (23.1 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1540
CrossesWilliamson Creek
Location.2 MI.N.JCT.SR1580
RouteState Highway 1540
Coordinates35.2367, -82.69885
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length76 ft (23.1 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2024)
Projected traffic8,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1540 over Williamson Creek built?

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

What condition is SR1540 over Williamson Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does SR1540 over Williamson Creek carry?

About 4,000 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is SR1540 over Williamson Creek?

The structure is 76 ft (23.1 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns SR1540 over Williamson Creek?

It is owned by the State Highway Agency.