US Bridges

Con 70 over TH 77; NB C/D

Fair

Hennepin County, Minnesota · 0.7 MI S of JCT TH 494 · Structure no. 27046

Built
1988
37 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
505 ft
4 main spans
Daily traffic
5,000
1994 count
Owner
State
State Highway Agency

About this bridge

Con 70 over TH 77; NB C/D is a steel continuous stringer/multi-beam or girder carrying Con 70 over TH 77; NB C/D in Hennepin County, Minnesota. It was built in 1988, so it is 37 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 5,000 vehicles a day, projected to reach 5,000 by 2029. The structure is 505 ft (153.9 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCon 70
CrossesTH 77; NB C/D
Location0.7 MI S of JCT TH 494
RouteState Highway 70
CountyHennepin County
StateMinnesota
Coordinates44.85268, -93.24743
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating109.8 US tons
Inventory rating66.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length505 ft (153.9 m)
Longest span140 ft (42.7 m)
Deck width46 ft (14 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (1994)
Projected traffic5,000 by 2029
Trucks—
Lanes on structure2
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 70 over TH 77; NB C/D built?

It was built in 1988, making it 37 years old in 2025.

What condition is Con 70 over TH 77; NB C/D 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 April 2024.

How much traffic does Con 70 over TH 77; NB C/D carry?

About 5,000 vehicles per day (1994 count).

How long is Con 70 over TH 77; NB C/D?

The structure is 505 ft (153.9 m) long with a longest span of 140 ft (42.7 m) and a deck 46 ft wide.

Who owns Con 70 over TH 77; NB C/D?

It is owned by the State Highway Agency.