US Bridges

US401S over Southern RR Creek

Poor

Wake County, North Carolina · 0.34 Mi. N. Jct. SR1375 · Structure no. 000000001830117

Built
1953
72 years old, rebuilt 1965
Condition
Poor
inspected August 2023
Type
Tee Beam
Concrete
Length
248 ft
6 main spans
Daily traffic
17,250
2019 count
Owner
State
State Highway Agency

About this bridge

US401S over Southern RR Creek is a concrete tee beam carrying US401S over Southern RR Creek in Wake County, North Carolina. It was built in 1953 and reconstructed in 1965, so it is 72 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 17,250 vehicles a day, roughly 12% of them trucks, projected to reach 34,500 by 2040. The structure is 248 ft (75.5 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS401S
CrossesSouthern RR Creek
Location0.34 Mi. N. Jct. SR1375
RouteU.S. Route 401
Coordinates35.70424, -78.66413
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating22.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length248 ft (75.5 m)
Longest span42 ft (12.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,250 (2019)
Projected traffic34,500 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US401S over Southern RR Creek built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1965.

What condition is US401S over Southern RR Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does US401S over Southern RR Creek carry?

About 17,250 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is US401S over Southern RR Creek?

The structure is 248 ft (75.5 m) long with a longest span of 42 ft (12.8 m) and a deck 33 ft wide.

Who owns US401S over Southern RR Creek?

It is owned by the State Highway Agency.