US Bridges

I85N over High Pt Thomas & Dent R

Fair

Davidson County, North Carolina · 0.5 MI.S.JCT.NC109 · Structure no. 000000000570495

Built
1981
44 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
26,750
2020 count
Owner
State
State Highway Agency

About this bridge

I85N over High Pt Thomas & Dent R is a prestressed concrete stringer/multi-beam or girder carrying I85N over High Pt Thomas & Dent R in Davidson 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 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 26,750 vehicles a day, roughly 16% of them trucks, projected to reach 53,500 by 2040. The structure is 120 ft (36.5 m) long and 59 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI85N
CrossesHigh Pt Thomas & Dent R
Location0.5 MI.S.JCT.NC109
RouteInterstate 85
CountyDavidson County
StateNorth Carolina
Coordinates35.86068, -80.0779
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating56 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length120 ft (36.5 m)
Longest span39 ft (11.8 m)
Deck width59 ft (17.9 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,750 (2020)
Projected traffic53,500 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I85N over High Pt Thomas & Dent R built?

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

What condition is I85N over High Pt Thomas & Dent R 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 April 2024.

How much traffic does I85N over High Pt Thomas & Dent R carry?

About 26,750 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I85N over High Pt Thomas & Dent R?

The structure is 120 ft (36.5 m) long with a longest span of 39 ft (11.8 m) and a deck 59 ft wide.

Who owns I85N over High Pt Thomas & Dent R?

It is owned by the State Highway Agency.