US Bridges

US311 over Dan River

Good

Stokes County, North Carolina · 0.5 Mi. N. Jct. SR1717 · Structure no. 000000001690047

Built
1998
27 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
282 ft
2 main spans
Daily traffic
3,600
2022 count
Owner
State
State Highway Agency

About this bridge

US311 over Dan River is a prestressed concrete continuous stringer/multi-beam or girder carrying US311 over Dan River in Stokes County, North Carolina. It was built in 1998, so it is 27 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 3,600 vehicles a day, roughly 8% of them trucks, projected to reach 7,200 by 2040. The structure is 282 ft (85.9 m) long and 33 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

CarriesUS311
CrossesDan River
Location0.5 Mi. N. Jct. SR1717
RouteU.S. Route 311
Coordinates36.32693, -80.09543
Functional classRural Minor Arterial

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.9 US tons
Inventory rating40.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length282 ft (85.9 m)
Longest span90 ft (27.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic7,200 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 US311 over Dan River built?

It was built in 1998, making it 27 years old in 2025.

What condition is US311 over Dan River 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 December 2024.

How much traffic does US311 over Dan River carry?

About 3,600 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US311 over Dan River?

The structure is 282 ft (85.9 m) long with a longest span of 90 ft (27.4 m) and a deck 33 ft wide.

Who owns US311 over Dan River?

It is owned by the State Highway Agency.