US Bridges

I 35 over S Ugstad RD (csah 45)

Fair

St. Louis County, Minnesota · 2.3 MI SW of W JCT TH 2 · Structure no. 69814

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
3 main spans
Daily traffic
25,343
2022 count
Owner
State
State Highway Agency

About this bridge

I 35 over S Ugstad RD (csah 45) is a prestressed concrete stringer/multi-beam or girder carrying I 35 over S Ugstad RD (csah 45) in St. Louis County, Minnesota. It was built in 1975, so it is 50 years old, older than the Minnesota average of 38.5 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 25,343 vehicles a day, roughly 5% of them trucks, projected to reach 28,500 by 2042. The structure is 164 ft (49.9 m) long and 84 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesI 35
CrossesS Ugstad RD (csah 45)
Location2.3 MI SW of W JCT TH 2
RouteInterstate 35
Coordinates46.72139, -92.23805
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (49.9 m)
Longest span68 ft (20.7 m)
Deck width84 ft (25.7 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,343 (2022)
Projected traffic28,500 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 I 35 over S Ugstad RD (csah 45) built?

It was built in 1975, making it 50 years old in 2025.

What condition is I 35 over S Ugstad RD (csah 45) 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 August 2024.

How much traffic does I 35 over S Ugstad RD (csah 45) carry?

About 25,343 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is I 35 over S Ugstad RD (csah 45)?

The structure is 164 ft (49.9 m) long with a longest span of 68 ft (20.7 m) and a deck 84 ft wide.

Who owns I 35 over S Ugstad RD (csah 45)?

It is owned by the State Highway Agency.