US Bridges

Csah 30 over N Br Sunrise River

Fair

Chisago County, Minnesota · In North Branch · Structure no. 8747

Built
1950
75 years old
Condition
Fair
inspected September 2022
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
7,049
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 30 over N Br Sunrise River is a concrete culvert carrying Csah 30 over N Br Sunrise River in Chisago County, Minnesota. It was built in 1950, so it is 75 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 7,049 vehicles a day, projected to reach 7,100 by 2042. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 30
CrossesN Br Sunrise River
LocationIn North Branch
RouteCounty Highway 30
CountyChisago County
StateMinnesota
Coordinates45.5159, -92.97999
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,049 (2022)
Projected traffic7,100 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$94 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 30 over N Br Sunrise River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Csah 30 over N Br Sunrise River 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 September 2022.

How much traffic does Csah 30 over N Br Sunrise River carry?

About 7,049 vehicles per day (2022 count).

How long is Csah 30 over N Br Sunrise River?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m).

Who owns Csah 30 over N Br Sunrise River?

It is owned by the County Highway Agency.