US Bridges

NC168 over Guinea Mill Run

Good

Currituck County, North Carolina · 0.3 Mi.N. of JCT.SR1347 · Structure no. 000000000530010

Built
1999
26 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
19,000
2021 count
Owner
State
State Highway Agency

About this bridge

NC168 over Guinea Mill Run is a prestressed concrete slab carrying NC168 over Guinea Mill Run in Currituck County, North Carolina. It was built in 1999, so it is 26 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 19,000 vehicles a day, roughly 8% of them trucks, projected to reach 38,000 by 2040. The structure is 100 ft (30.4 m) long and 84 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNC168
CrossesGuinea Mill Run
Location0.3 Mi.N. of JCT.SR1347
RouteState Highway 168
Coordinates36.48179, -76.13181
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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating39.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length100 ft (30.4 m)
Longest span48 ft (14.6 m)
Deck width84 ft (25.6 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2021)
Projected traffic38,000 by 2040
Trucks8%
Lanes on structure5
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC168 over Guinea Mill Run built?

It was built in 1999, making it 26 years old in 2025.

What condition is NC168 over Guinea Mill Run 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 October 2024.

How much traffic does NC168 over Guinea Mill Run carry?

About 19,000 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is NC168 over Guinea Mill Run?

The structure is 100 ft (30.4 m) long with a longest span of 48 ft (14.6 m) and a deck 84 ft wide.

Who owns NC168 over Guinea Mill Run?

It is owned by the State Highway Agency.