US Bridges

I85SBUS US70W US29 over Deep River

Good

Guilford County, North Carolina · 0.6MI. N. Jct. SR1145 · Structure no. 000000000810242

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
221 ft
3 main spans
Daily traffic
14,750
2022 count
Owner
State
State Highway Agency

About this bridge

I85SBUS US70W US29 over Deep River is a prestressed concrete continuous stringer/multi-beam or girder carrying I85SBUS US70W US29 over Deep River in Guilford 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 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 14,750 vehicles a day, roughly 12% of them trucks, projected to reach 29,500 by 2040. The structure is 221 ft (67.3 m) long and 41 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesI85SBUS US70W US29
CrossesDeep River
Location0.6MI. N. Jct. SR1145
RouteInterstate 85
Coordinates35.97276, -79.91786
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating68.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length221 ft (67.3 m)
Longest span98 ft (29.8 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,750 (2022)
Projected traffic29,500 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 I85SBUS US70W US29 over Deep River built?

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

What condition is I85SBUS US70W US29 over Deep River 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 I85SBUS US70W US29 over Deep River carry?

About 14,750 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I85SBUS US70W US29 over Deep River?

The structure is 221 ft (67.3 m) long with a longest span of 98 ft (29.8 m) and a deck 41 ft wide.

Who owns I85SBUS US70W US29 over Deep River?

It is owned by the State Highway Agency.