US Bridges

NC8 over Mill Creek

Fair

Forsyth County, North Carolina · 0.5 Mi. N. Jct. SR1686 · Structure no. 000000000670103

Built
1982
43 years old
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
107 ft
3 main spans
Daily traffic
13,000
2021 count
Owner
State
State Highway Agency

About this bridge

NC8 over Mill Creek is a prestressed concrete slab carrying NC8 over Mill Creek in Forsyth County, North Carolina. It was built in 1982, so it is 43 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 13,000 vehicles a day, roughly 6% of them trucks, projected to reach 26,000 by 2040. The structure is 107 ft (32.6 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNC8
CrossesMill Creek
Location0.5 Mi. N. Jct. SR1686
RouteState Highway 8
Coordinates36.18018, -80.25834
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length107 ft (32.6 m)
Longest span35 ft (10.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2021)
Projected traffic26,000 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 SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC8 over Mill Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is NC8 over Mill Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does NC8 over Mill Creek carry?

About 13,000 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is NC8 over Mill Creek?

The structure is 107 ft (32.6 m) long with a longest span of 35 ft (10.6 m) and a deck 33 ft wide.

Who owns NC8 over Mill Creek?

It is owned by the State Highway Agency.