US Bridges

US70 US401 NC50 over Branch Walnut Creek

Good

Wake County, North Carolina · 0.1 Mi. S. Jct. I40 · Structure no. 000000001830562

Built
1981
44 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
55,000
2021 count
Owner
State
State Highway Agency

About this bridge

US70 US401 NC50 over Branch Walnut Creek is a concrete continuous culvert carrying US70 US401 NC50 over Branch Walnut Creek in Wake County, North Carolina. It was built in 1981, so it is 44 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 55,000 vehicles a day, roughly 12% of them trucks, projected to reach 110,000 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS70 US401 NC50
CrossesBranch Walnut Creek
Location0.1 Mi. S. Jct. I40
RouteU.S. Route 70
Coordinates35.75158, -78.6491
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,000 (2021)
Projected traffic110,000 by 2040
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US70 US401 NC50 over Branch Walnut Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is US70 US401 NC50 over Branch Walnut 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 February 2024.

How much traffic does US70 US401 NC50 over Branch Walnut Creek carry?

About 55,000 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US70 US401 NC50 over Branch Walnut Creek?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.7 m).

Who owns US70 US401 NC50 over Branch Walnut Creek?

It is owned by the State Highway Agency.