US Bridges

Csah 4 over Rice River

Good

Aitkin County, Minnesota · 0.5 MI W of JCT TH 65 · Structure no. 01532

Built
2013
12 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
76 ft
1 main span
Daily traffic
265
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Rice River is a concrete stringer/multi-beam or girder carrying Csah 4 over Rice River in Aitkin County, Minnesota. It was built in 2013, so it is 12 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 265 vehicles a day, projected to reach 250 by 2041. The structure is 76 ft (23.3 m) long and 38 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesCsah 4
CrossesRice River
Location0.5 MI W of JCT TH 65
RouteCounty Highway 4
Coordinates46.47671, -93.28287
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length76 ft (23.3 m)
Longest span74 ft (22.6 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2021)
Projected traffic250 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 4 over Rice River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Csah 4 over Rice River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Csah 4 over Rice River carry?

About 265 vehicles per day (2021 count).

How long is Csah 4 over Rice River?

The structure is 76 ft (23.3 m) long with a longest span of 74 ft (22.6 m) and a deck 38 ft wide.

Who owns Csah 4 over Rice River?

It is owned by the County Highway Agency.