US Bridges

US311 over Brushy Fork Branch

Poor

Forsyth County, North Carolina · 1.7 Mi. S. Jct. SR2393 · Structure no. 000000000670177

Built
1970
55 years old
Condition
Poor
inspected October 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
4,400
2021 count
Owner
State
State Highway Agency

About this bridge

US311 over Brushy Fork Branch is a steel culvert carrying US311 over Brushy Fork Branch in Forsyth County, North Carolina. It was built in 1970, so it is 55 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.

It carries about 4,400 vehicles a day, roughly 6% of them trucks, projected to reach 8,800 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS311
CrossesBrushy Fork Branch
Location1.7 Mi. S. Jct. SR2393
RouteU.S. Route 311
CountyForsyth County
StateNorth Carolina
Coordinates36.12931, -80.20233
Functional classUrban Minor Arterial

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: 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 rating99 US tons
Inventory rating76.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2021)
Projected traffic8,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Brushy Fork Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is US311 over Brushy Fork Branch 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 October 2023.

How much traffic does US311 over Brushy Fork Branch carry?

About 4,400 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is US311 over Brushy Fork Branch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns US311 over Brushy Fork Branch?

It is owned by the State Highway Agency.