US Bridges

CR 109 over Tamarac River

Good

Marshall County, Minnesota · 0.3 MI N of JCT Csah 30 · Structure no. 45576

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
185 ft
3 main spans
Daily traffic
20
2014 count
Owner
County
County Highway Agency

About this bridge

CR 109 over Tamarac River is a prestressed concrete stringer/multi-beam or girder carrying CR 109 over Tamarac River in Marshall County, Minnesota. It was built in 2014, so it is 11 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, projected to reach 20 by 2039. The structure is 185 ft (56.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 109
CrossesTamarac River
Location0.3 MI N of JCT Csah 30
RouteCounty Highway 109
Coordinates48.40413, -96.82395
Functional classRural Local

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.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.7 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length185 ft (56.3 m)
Longest span61 ft (18.7 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2014)
Projected traffic20 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 CR 109 over Tamarac River built?

It was built in 2014, making it 11 years old in 2025.

What condition is CR 109 over Tamarac 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 CR 109 over Tamarac River carry?

About 20 vehicles per day (2014 count).

How long is CR 109 over Tamarac River?

The structure is 185 ft (56.3 m) long with a longest span of 61 ft (18.7 m) and a deck 31 ft wide.

Who owns CR 109 over Tamarac River?

It is owned by the County Highway Agency.