US Bridges

SR1320 over Dobbin Creek

PoorPosted for load

Yadkin County, North Carolina · .5 MI.E.JCT.SR1300 · Structure no. 000000001970042

Built
1971
54 years old
Condition
Poor
inspected January 2025
Type
Channel Beam
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
150
2021 count
Owner
State
State Highway Agency

About this bridge

SR1320 over Dobbin Creek is a prestressed concrete channel beam carrying SR1320 over Dobbin Creek in Yadkin County, North Carolina. It was built in 1971, so it is 54 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 3 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 150 vehicles a day, roughly 6% of them trucks, projected to reach 300 by 2040. The structure is 75 ft (22.8 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1320
CrossesDobbin Creek
Location.5 MI.E.JCT.SR1300
RouteState Highway 1320
Coordinates36.14601, -80.85709
Functional classRural Local

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
Deck7 GoodSome minor problems.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating25.9 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 10
Structure length75 ft (22.8 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic300 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 SR1320 over Dobbin Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is SR1320 over Dobbin 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 January 2025.

How much traffic does SR1320 over Dobbin Creek carry?

About 150 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1320 over Dobbin Creek?

The structure is 75 ft (22.8 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns SR1320 over Dobbin Creek?

It is owned by the State Highway Agency.