US Bridges

US70W over Storm Drain

Fair

Alamance County, North Carolina · 0.8 Mi. E. Jct. NC87 · Structure no. 000000000010355

Built
1970
55 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
56 ft
3 main spans
Daily traffic
12,000
2021 count
Owner
State
State Highway Agency

About this bridge

US70W over Storm Drain is a concrete continuous slab carrying US70W over Storm Drain in Alamance County, North Carolina. It was built in 1970, so it is 55 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 6 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 12,000 vehicles a day, roughly 12% of them trucks, projected to reach 24,000 by 2040. The structure is 56 ft (17 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS70W
CrossesStorm Drain
Location0.8 Mi. E. Jct. NC87
RouteU.S. Route 70
Coordinates36.10273, -79.42645
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating51.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length56 ft (17 m)
Longest span20 ft (6 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2021)
Projected traffic24,000 by 2040
Trucks12%
Lanes on structure3
Traffic directionOne-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US70W over Storm Drain built?

It was built in 1970, making it 55 years old in 2025.

What condition is US70W over Storm Drain 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 December 2024.

How much traffic does US70W over Storm Drain carry?

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

How long is US70W over Storm Drain?

The structure is 56 ft (17 m) long with a longest span of 20 ft (6 m) and a deck 44 ft wide.

Who owns US70W over Storm Drain?

It is owned by the State Highway Agency.