US Bridges

SR1518 over Mill Creek

Good

Onslow County, North Carolina · 0.9MI.E. of JCT.NC210 · Structure no. 000000001330182

Built
1989
36 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
3 main spans
Daily traffic
7,700
2022 count
Owner
State
State Highway Agency

About this bridge

SR1518 over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying SR1518 over Mill Creek in Onslow County, North Carolina. It was built in 1989, so it is 36 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 7,700 vehicles a day, roughly 7% of them trucks, projected to reach 15,400 by 2040. The structure is 105 ft (32 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1518
CrossesMill Creek
Location0.9MI.E. of JCT.NC210
RouteState Highway 1518
Coordinates34.52436, -77.42465
Functional classRural Major Collector

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating68.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span33 ft (10 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,700 (2022)
Projected traffic15,400 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1518 over Mill Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is SR1518 over Mill 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 January 2024.

How much traffic does SR1518 over Mill Creek carry?

About 7,700 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1518 over Mill Creek?

The structure is 105 ft (32 m) long with a longest span of 33 ft (10 m) and a deck 35 ft wide.

Who owns SR1518 over Mill Creek?

It is owned by the State Highway Agency.