US Bridges

Csah 7 over I 35

Fair

Chisago County, Minnesota · 11.1 MI N of JCT TH 95 · Structure no. 13811

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
328 ft
4 main spans
Daily traffic
1,793
2022 count
Owner
State
State Highway Agency

About this bridge

Csah 7 over I 35 is a prestressed concrete stringer/multi-beam or girder carrying Csah 7 over I 35 in Chisago County, Minnesota. It was built in 1970, so it is 55 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 1,793 vehicles a day, projected to reach 2,300 by 2042. The structure is 328 ft (99.9 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCsah 7
CrossesI 35
Location11.1 MI N of JCT TH 95
RouteCounty Highway 7
CountyChisago County
StateMinnesota
Coordinates45.67096, -92.99231
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.3 US tons
Inventory rating33.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length328 ft (99.9 m)
Longest span100 ft (30.4 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,793 (2022)
Projected traffic2,300 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 7 over I 35 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Csah 7 over I 35 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 2024.

How much traffic does Csah 7 over I 35 carry?

About 1,793 vehicles per day (2022 count).

How long is Csah 7 over I 35?

The structure is 328 ft (99.9 m) long with a longest span of 100 ft (30.4 m) and a deck 44 ft wide.

Who owns Csah 7 over I 35?

It is owned by the State Highway Agency.