US Bridges

I 535 over ST Louis R; RR Street

PoorPosted for load

St. Louis County, Minnesota · 1.3 SE of JCT TH 35 · Structure no. 9030

Built
1961
64 years old, rebuilt 1993
Condition
Poor
inspected July 2024
Type
Truss - Thru
Steel Continuous
Length
7,980 ft
3 main spans
Daily traffic
28,098
2021 count
Owner
State
State Highway Agency

About this bridge

I 535 over ST Louis R; RR Street is a steel continuous truss - thru carrying I 535 over ST Louis R; RR Street in St. Louis County, Minnesota. It was built in 1961 and reconstructed in 1993, so it is 64 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 28,098 vehicles a day, roughly 6% of them trucks, projected to reach 32,500 by 2041. The structure is 7,980 ft (2,432.3 m) long and 64 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesI 535
CrossesST Louis R; RR Street
Location1.3 SE of JCT TH 35
RouteInterstate 535
Coordinates46.74971, -92.1012
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+49 approach)
Design loadHS 20
Structure length7,980 ft (2,432.3 m)
Longest span600 ft (182.9 m)
Deck width64 ft (19.4 m)
Roadway width59 ft (17.9 m)
Vertical clearance over deck19 ft (5.8 m)

Traffic and service

Average daily traffic28,098 (2021)
Projected traffic32,500 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed8.1 mi (13 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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I 535 over ST Louis R; RR Street built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1993.

What condition is I 535 over ST Louis R; RR Street in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does I 535 over ST Louis R; RR Street carry?

About 28,098 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I 535 over ST Louis R; RR Street?

The structure is 7,980 ft (2,432.3 m) long with a longest span of 600 ft (182.9 m) and a deck 64 ft wide.

Who owns I 535 over ST Louis R; RR Street?

It is owned by the State Highway Agency.