Csah 4 over Elk Creek

Good

Rock County, Minnesota · 0.7 MI W of JCT Csah 3 · Structure no. 67524

Built: 1984; 41 years old
Condition: Good; inspected September 2023
Type: Tee Beam; Prestressed Concrete
Length: 101 ft; 3 main spans
Daily traffic: 1,260; 2022 count
Owner: County; County Highway Agency

About this bridge

Csah 4 over Elk Creek is a prestressed concrete tee beam carrying Csah 4 over Elk Creek in Rock County, Minnesota. It was built in 1984, so it is 41 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 1,260 vehicles a day, projected to reach 1,500 by 2042. The structure is 101 ft (30.9 m) long and 45 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesCsah 4

CrossesElk Creek

Location0.7 MI W of JCT Csah 3

RouteCounty Highway 4

CountyRock County

StateMinnesota

Coordinates43.64537, -96.10766

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.

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	8 Very Good	No problems noted.

Last inspectionSeptember 2023

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 adequacy7: Better than present minimum criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating83.9 US tons

Inventory rating50.2 US tons

Structure

Structure typeTee Beam

MaterialPrestressed Concrete

DeckConcrete, precast panels

Main spans3

Design loadHS 20

Structure length101 ft (30.9 m)

Longest span33 ft (10.2 m)

Deck width45 ft (13.7 m)

Roadway width42 ft (12.7 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,260 (2022)

Projected traffic1,500 by 2042

Trucks—

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed14.3 mi (23 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 Elk Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Csah 4 over Elk 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 September 2023.

How much traffic does Csah 4 over Elk Creek carry?

About 1,260 vehicles per day (2022 count).

How long is Csah 4 over Elk Creek?

The structure is 101 ft (30.9 m) long with a longest span of 33 ft (10.2 m) and a deck 45 ft wide.

Who owns Csah 4 over Elk Creek?

It is owned by the County Highway Agency.