US Bridges

SR1301 over Twelvemile Creek

PoorPosted for load

Union County, North Carolina · 0.2 Mi. E. Jct. SR1305 · Structure no. 000000001790224

Built
1964
61 years old
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
8 main spans
Daily traffic
6,100
2021 count
Owner
State
State Highway Agency

About this bridge

SR1301 over Twelvemile Creek is a steel continuous stringer/multi-beam or girder carrying SR1301 over Twelvemile Creek in Union County, North Carolina. It was built in 1964, so it is 61 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 6,100 vehicles a day, roughly 7% of them trucks, projected to reach 12,200 by 2040. The structure is 134 ft (40.8 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR1301
CrossesTwelvemile Creek
Location0.2 Mi. E. Jct. SR1305
RouteState Highway 1301
Coordinates34.94481, -80.77209
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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 rating33 US tons
Inventory rating20 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans8
Design loadUnknown
Structure length134 ft (40.8 m)
Longest span20 ft (6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2021)
Projected traffic12,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 SR1301 over Twelvemile Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR1301 over Twelvemile 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 June 2023.

How much traffic does SR1301 over Twelvemile Creek carry?

About 6,100 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1301 over Twelvemile Creek?

The structure is 134 ft (40.8 m) long with a longest span of 20 ft (6 m) and a deck 24 ft wide.

Who owns SR1301 over Twelvemile Creek?

It is owned by the State Highway Agency.