US Bridges

NC344 over Knobbs Creek Trib.

Good

Pasquotank County, North Carolina · 0.1 MI.W.JCT.US17BYP · Structure no. 000000001390101

Built
2004
21 years old
Condition
Good
inspected May 2021
Type
Slab
Prestressed Concrete
Length
683 ft
13 main spans
Daily traffic
17,000
2018 count
Owner
State
State Highway Agency

About this bridge

NC344 over Knobbs Creek Trib. is a prestressed concrete slab carrying NC344 over Knobbs Creek Trib. in Pasquotank County, North Carolina. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,000 vehicles a day, roughly 6% of them trucks, projected to reach 34,000 by 2040. The structure is 683 ft (208.1 m) long and 69 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesNC344
CrossesKnobbs Creek Trib.
Location0.1 MI.W.JCT.US17BYP
RouteState Highway 344
Coordinates36.29675, -76.24795
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans13
Design loadHS 20 + Mod
Structure length683 ft (208.1 m)
Longest span59 ft (17.9 m)
Deck width69 ft (21 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,000 (2018)
Projected traffic34,000 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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 NC344 over Knobbs Creek Trib. built?

It was built in 2004, making it 21 years old in 2025.

What condition is NC344 over Knobbs Creek Trib. 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 May 2021.

How much traffic does NC344 over Knobbs Creek Trib. carry?

About 17,000 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is NC344 over Knobbs Creek Trib.?

The structure is 683 ft (208.1 m) long with a longest span of 59 ft (17.9 m) and a deck 69 ft wide.

Who owns NC344 over Knobbs Creek Trib.?

It is owned by the State Highway Agency.