US Bridges

Con 723 over 57th Ave W

Fair

St. Louis County, Minnesota · 3.5 MI SW of JCT TH 535 · Structure no. 69879E

Built
1969
56 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
523 ft
6 main spans
Daily traffic
1,567
2021 count
Owner
State
State Highway Agency

About this bridge

Con 723 over 57th Ave W is a steel continuous stringer/multi-beam or girder carrying Con 723 over 57th Ave W in St. Louis County, Minnesota. It was built in 1969, so it is 56 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 5 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 1,567 vehicles a day, projected to reach 1,750 by 2041. The structure is 523 ft (159.4 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCon 723
Crosses57th Ave W
Location3.5 MI SW of JCT TH 535
RouteInterstate 723
CountySt. Louis County
StateMinnesota
Coordinates46.73591, -92.16919
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating30.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length523 ft (159.4 m)
Longest span109 ft (33.3 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,567 (2021)
Projected traffic1,750 by 2041
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
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 Con 723 over 57th Ave W built?

It was built in 1969, making it 56 years old in 2025.

What condition is Con 723 over 57th Ave W 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 Con 723 over 57th Ave W carry?

About 1,567 vehicles per day (2021 count).

How long is Con 723 over 57th Ave W?

The structure is 523 ft (159.4 m) long with a longest span of 109 ft (33.3 m) and a deck 26 ft wide.

Who owns Con 723 over 57th Ave W?

It is owned by the State Highway Agency.