US Bridges

NC11 over Conoho Creek

Good

Martin County, North Carolina · 0.8 Mi.N. of JCT.NC125 · Structure no. 000000001170014

Built
1966
59 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
132 ft
6 main spans
Daily traffic
4,700
2022 count
Owner
State
State Highway Agency

About this bridge

NC11 over Conoho Creek is a concrete slab carrying NC11 over Conoho Creek in Martin County, North Carolina. It was built in 1966, so it is 59 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 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 4,700 vehicles a day, roughly 8% of them trucks, projected to reach 9,400 by 2040. The structure is 132 ft (40.2 m) long and 36 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesNC11
CrossesConoho Creek
Location0.8 Mi.N. of JCT.NC125
RouteState Highway 11
Coordinates35.97204, -77.29499
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 inspectionApril 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length132 ft (40.2 m)
Longest span22 ft (6.7 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2022)
Projected traffic9,400 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC11 over Conoho Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is NC11 over Conoho Creek 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 April 2024.

How much traffic does NC11 over Conoho Creek carry?

About 4,700 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is NC11 over Conoho Creek?

The structure is 132 ft (40.2 m) long with a longest span of 22 ft (6.7 m) and a deck 36 ft wide.

Who owns NC11 over Conoho Creek?

It is owned by the State Highway Agency.