US Bridges

I85NBUS US29 US70 over SR1798

Good

Davidson County, North Carolina · 0.92 MI E JCT SR1844 · Structure no. 000000000570576

Built
2024
1 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
222 ft
2 main spans
Daily traffic
8,250
2022 count
Owner
State
State Highway Agency

About this bridge

I85NBUS US29 US70 over SR1798 is a prestressed concrete continuous stringer/multi-beam or girder carrying I85NBUS US29 US70 over SR1798 in Davidson County, North Carolina. It was built in 2024, so it is 1 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 8,250 vehicles a day, roughly 14% of them trucks, projected to reach 16,500 by 2040. The structure is 222 ft (67.6 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85NBUS US29 US70
CrossesSR1798
Location0.92 MI E JCT SR1844
RouteInterstate 85
Coordinates35.86148, -80.18532
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating51.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length222 ft (67.6 m)
Longest span108 ft (32.9 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,250 (2022)
Projected traffic16,500 by 2040
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I85NBUS US29 US70 over SR1798 built?

It was built in 2024, making it 1 years old in 2025.

What condition is I85NBUS US29 US70 over SR1798 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 August 2024.

How much traffic does I85NBUS US29 US70 over SR1798 carry?

About 8,250 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is I85NBUS US29 US70 over SR1798?

The structure is 222 ft (67.6 m) long with a longest span of 108 ft (32.9 m) and a deck 44 ft wide.

Who owns I85NBUS US29 US70 over SR1798?

It is owned by the State Highway Agency.