US Bridges

Csah 116 over Rum River

Fair

Anoka County, Minnesota · 0.4 MI E of JCT TH 47 · Structure no. 02545

Built
1990
35 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
540 ft
4 main spans
Daily traffic
17,600
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 116 over Rum River is a prestressed concrete stringer/multi-beam or girder carrying Csah 116 over Rum River in Anoka County, Minnesota. It was built in 1990, so it is 35 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 17,600 vehicles a day, roughly 7% of them trucks, projected to reach 17,000 by 2038. The structure is 540 ft (164.6 m) long and 85 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 116
CrossesRum River
Location0.4 MI E of JCT TH 47
RouteCounty Highway 116
CountyAnoka County
StateMinnesota
Coordinates45.22715, -93.39029
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating101.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length540 ft (164.6 m)
Longest span134 ft (40.7 m)
Deck width85 ft (25.8 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,600 (2018)
Projected traffic17,000 by 2038
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 116 over Rum River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Csah 116 over Rum 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 November 2023.

How much traffic does Csah 116 over Rum River carry?

About 17,600 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Csah 116 over Rum River?

The structure is 540 ft (164.6 m) long with a longest span of 134 ft (40.7 m) and a deck 85 ft wide.

Who owns Csah 116 over Rum River?

It is owned by the County Highway Agency.