US Bridges

Csah 57 over US 169

Fair

St. Louis County, Minnesota · 1.0 MI E of S JCT TH 73 · Structure no. 69565

Built
1987
38 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
251 ft
2 main spans
Daily traffic
3,550
2019 count
Owner
State
State Highway Agency

About this bridge

Csah 57 over US 169 is a steel continuous stringer/multi-beam or girder carrying Csah 57 over US 169 in St. Louis County, Minnesota. It was built in 1987, so it is 38 years old, younger 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 3,550 vehicles a day, projected to reach 3,550 by 2039. The structure is 251 ft (76.4 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 57
CrossesUS 169
Location1.0 MI E of S JCT TH 73
RouteCounty Highway 57
CountySt. Louis County
StateMinnesota
Coordinates47.40016, -92.94135
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.8 US tons
Inventory rating57.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length251 ft (76.4 m)
Longest span130 ft (39.6 m)
Deck width52 ft (16 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,550 (2019)
Projected traffic3,550 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 Csah 57 over US 169 built?

It was built in 1987, making it 38 years old in 2025.

What condition is Csah 57 over US 169 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 May 2023.

How much traffic does Csah 57 over US 169 carry?

About 3,550 vehicles per day (2019 count).

How long is Csah 57 over US 169?

The structure is 251 ft (76.4 m) long with a longest span of 130 ft (39.6 m) and a deck 52 ft wide.

Who owns Csah 57 over US 169?

It is owned by the State Highway Agency.