US Bridges

SR1336 over Mill Creek

Fair

Onslow County, North Carolina · 0.6 MI N JCT US17 · Structure no. 000000001330223

Built
1974
51 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
110 ft
5 main spans
Daily traffic
18,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR1336 over Mill Creek is a concrete continuous slab carrying SR1336 over Mill Creek in Onslow County, North Carolina. It was built in 1974, so it is 51 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 5 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 18,500 vehicles a day, roughly 6% of them trucks, projected to reach 37,000 by 2040. The structure is 110 ft (33.5 m) long and 76 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1336
CrossesMill Creek
Location0.6 MI N JCT US17
RouteState Highway 1336
Coordinates34.76559, -77.42247
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: 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 rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length110 ft (33.5 m)
Longest span21 ft (6.4 m)
Deck width76 ft (23.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,500 (2022)
Projected traffic37,000 by 2040
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 SR1336 over Mill Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is SR1336 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 February 2024.

How much traffic does SR1336 over Mill Creek carry?

About 18,500 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1336 over Mill Creek?

The structure is 110 ft (33.5 m) long with a longest span of 21 ft (6.4 m) and a deck 76 ft wide.

Who owns SR1336 over Mill Creek?

It is owned by the State Highway Agency.