US Bridges

SR1550 over White Oak Creek

Good

Johnston County, North Carolina · 1 Mi.E.Jct SR1525 · Structure no. 000000001010141

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
97 ft
2 main spans
Daily traffic
3,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR1550 over White Oak Creek is a prestressed concrete slab carrying SR1550 over White Oak Creek in Johnston County, North Carolina. It was built in 2020, so it is 5 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 3,000 vehicles a day, roughly 7% of them trucks, projected to reach 6,000 by 2040. The structure is 97 ft (29.5 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR1550
CrossesWhite Oak Creek
Location1 Mi.E.Jct SR1525
RouteState Highway 1550
Coordinates35.63901, -78.52133
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating63.9 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length97 ft (29.5 m)
Longest span49 ft (14.9 m)
Deck width36 ft (10.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2022)
Projected traffic6,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1550 over White Oak Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is SR1550 over White Oak 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 September 2024.

How much traffic does SR1550 over White Oak Creek carry?

About 3,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1550 over White Oak Creek?

The structure is 97 ft (29.5 m) long with a longest span of 49 ft (14.9 m) and a deck 36 ft wide.

Who owns SR1550 over White Oak Creek?

It is owned by the State Highway Agency.