US Bridges

I785N I840N over SR2825;N.BUFFALO Cr.

Good

Guilford County, North Carolina · 1 Mi. N. Jct. SR2770 · Structure no. 000000000811137

Built
2017
8 years old
Condition
Good
inspected November 2023
Type
Slab
Prestressed Concrete
Length
189 ft
2 main spans
Daily traffic
6,500
2019 count
Owner
State
State Highway Agency

About this bridge

I785N I840N over SR2825;N.BUFFALO Cr. is a prestressed concrete slab carrying I785N I840N over SR2825;N.BUFFALO Cr. in Guilford County, North Carolina. It was built in 2017, so it is 8 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 6,500 vehicles a day, roughly 16% of them trucks, projected to reach 13,000 by 2040. The structure is 189 ft (57.6 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI785N I840N
CrossesSR2825;N.BUFFALO Cr.
Location1 Mi. N. Jct. SR2770
RouteInterstate 7850
CountyGuilford County
StateNorth Carolina
Coordinates36.11642, -79.70396
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length189 ft (57.6 m)
Longest span101 ft (30.7 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2019)
Projected traffic13,000 by 2040
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I785N I840N over SR2825;N.BUFFALO Cr. built?

It was built in 2017, making it 8 years old in 2025.

What condition is I785N I840N over SR2825;N.BUFFALO Cr. 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 November 2023.

How much traffic does I785N I840N over SR2825;N.BUFFALO Cr. carry?

About 6,500 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is I785N I840N over SR2825;N.BUFFALO Cr.?

The structure is 189 ft (57.6 m) long with a longest span of 101 ft (30.7 m) and a deck 46 ft wide.

Who owns I785N I840N over SR2825;N.BUFFALO Cr.?

It is owned by the State Highway Agency.