US Bridges

Swing Dairy Road over Winston-Salem SB Railway

Good

Davidson County, North Carolina · 0.4 MI.W.JCT.NC8 · Structure no. 000000000570193

Built
1991
34 years old
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
119 ft
3 main spans
Daily traffic
1,500
1994 count
Owner
City
City or Municipal Highway Agency

About this bridge

Swing Dairy Road over Winston-Salem SB Railway is a prestressed concrete slab carrying Swing Dairy Road over Winston-Salem SB Railway in Davidson County, North Carolina. It was built in 1991, so it is 34 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,000 by 2040. The structure is 119 ft (36.2 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSwing Dairy Road
CrossesWinston-Salem SB Railway
Location0.4 MI.W.JCT.NC8
RouteCity Street 0
Coordinates35.83971, -80.25972
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length119 ft (36.2 m)
Longest span51 ft (15.5 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (1994)
Projected traffic3,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Swing Dairy Road over Winston-Salem SB Railway built?

It was built in 1991, making it 34 years old in 2025.

What condition is Swing Dairy Road over Winston-Salem SB Railway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Swing Dairy Road over Winston-Salem SB Railway carry?

About 1,500 vehicles per day (1994 count), of which roughly 7% are trucks.

How long is Swing Dairy Road over Winston-Salem SB Railway?

The structure is 119 ft (36.2 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.

Who owns Swing Dairy Road over Winston-Salem SB Railway?

It is owned by the City or Municipal Highway Agency.