US Bridges

SR3175 over I485

Fair

Mecklenburg County, North Carolina · 0.5 Mi. S. Jct. SR3174 · Structure no. 000000001190988

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
328 ft
4 main spans
Daily traffic
3,800
2016 count
Owner
State
State Highway Agency

About this bridge

SR3175 over I485 is a steel stringer/multi-beam or girder carrying SR3175 over I485 in Mecklenburg County, North Carolina. It was built in 2000, so it is 25 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 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 3,800 vehicles a day, roughly 7% of them trucks, projected to reach 7,600 by 2040. The structure is 328 ft (99.9 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR3175
CrossesI485
Location0.5 Mi. S. Jct. SR3174
RouteState Highway 3175
CountyMecklenburg County
StateNorth Carolina
Coordinates35.1197, -80.66394
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.9 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length328 ft (99.9 m)
Longest span115 ft (35 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2016)
Projected traffic7,600 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR3175 over I485 built?

It was built in 2000, making it 25 years old in 2025.

What condition is SR3175 over I485 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 March 2023.

How much traffic does SR3175 over I485 carry?

About 3,800 vehicles per day (2016 count), of which roughly 7% are trucks.

How long is SR3175 over I485?

The structure is 328 ft (99.9 m) long with a longest span of 115 ft (35 m) and a deck 35 ft wide.

Who owns SR3175 over I485?

It is owned by the State Highway Agency.