US Bridges

Mn 100 over W 70th ST

Fair

Hennepin County, Minnesota · 0.9 MI S of JCT TH 62 · Structure no. 9431

Built
1977
48 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
2 main spans
Daily traffic
59,679
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 100 over W 70th ST is a prestressed concrete stringer/multi-beam or girder carrying Mn 100 over W 70th ST in Hennepin County, Minnesota. It was built in 1977, so it is 48 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 59,679 vehicles a day, roughly 3% of them trucks, projected to reach 59,000 by 2042. The structure is 192 ft (58.6 m) long and 122 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMn 100
CrossesW 70th ST
Location0.9 MI S of JCT TH 62
RouteState Highway 100
CountyHennepin County
StateMinnesota
Coordinates44.87624, -93.35052
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length192 ft (58.6 m)
Longest span94 ft (28.6 m)
Deck width122 ft (37.2 m)
Roadway width115 ft (35.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59,679 (2022)
Projected traffic59,000 by 2042
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Mn 100 over W 70th ST built?

It was built in 1977, making it 48 years old in 2025.

What condition is Mn 100 over W 70th ST 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 Mn 100 over W 70th ST carry?

About 59,679 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Mn 100 over W 70th ST?

The structure is 192 ft (58.6 m) long with a longest span of 94 ft (28.6 m) and a deck 122 ft wide.

Who owns Mn 100 over W 70th ST?

It is owned by the State Highway Agency.