US Bridges

Csah 2 over Little Rock Creek

Fair

Benton County, Minnesota · 2.0 MI W of JCT CR 78 · Structure no. 05512

Built
1973
52 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
81 ft
3 main spans
Daily traffic
1,100
2015 count
Owner
County
County Highway Agency

About this bridge

Csah 2 over Little Rock Creek is a prestressed concrete channel beam carrying Csah 2 over Little Rock Creek in Benton County, Minnesota. It was built in 1973, so it is 52 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 5 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 1,100 vehicles a day, projected to reach 1,100 by 2039. The structure is 81 ft (24.8 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 2
CrossesLittle Rock Creek
Location2.0 MI W of JCT CR 78
RouteCounty Highway 2
CountyBenton County
StateMinnesota
Coordinates45.75007, -94.17475
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.7 US tons
Inventory rating38.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length81 ft (24.8 m)
Longest span31 ft (9.5 m)
Deck width41 ft (12.6 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2015)
Projected traffic1,100 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 2 over Little Rock Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Csah 2 over Little Rock Creek 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 2024.

How much traffic does Csah 2 over Little Rock Creek carry?

About 1,100 vehicles per day (2015 count).

How long is Csah 2 over Little Rock Creek?

The structure is 81 ft (24.8 m) long with a longest span of 31 ft (9.5 m) and a deck 41 ft wide.

Who owns Csah 2 over Little Rock Creek?

It is owned by the County Highway Agency.