US Bridges

Csah 3 over Elm Creek

Good

Watonwan County, Minnesota · 1.7 MI W of JCT TH15 · Structure no. 83504

Built
1963
62 years old
Condition
Good
inspected November 2023
Type
Channel Beam
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
1,500
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over Elm Creek is a prestressed concrete channel beam carrying Csah 3 over Elm Creek in Watonwan County, Minnesota. It was built in 1963, so it is 62 years old, older 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 1,500 vehicles a day, projected to reach 1,500 by 2035. The structure is 75 ft (23 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 3
CrossesElm Creek
Location1.7 MI W of JCT TH15
RouteCounty Highway 3
Coordinates44.06543, -94.45383
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length75 ft (23 m)
Longest span25 ft (7.7 m)
Deck width31 ft (9.6 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2016)
Projected traffic1,500 by 2035
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$327 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 3 over Elm Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Csah 3 over Elm Creek 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 November 2023.

How much traffic does Csah 3 over Elm Creek carry?

About 1,500 vehicles per day (2016 count).

How long is Csah 3 over Elm Creek?

The structure is 75 ft (23 m) long with a longest span of 25 ft (7.7 m) and a deck 31 ft wide.

Who owns Csah 3 over Elm Creek?

It is owned by the County Highway Agency.