US Bridges

Csah 15 over S Fk Zumbro River

FairPosted for load

Olmsted County, Minnesota · 0.2 MI S of JCT CR 126 · Structure no. 55507

Built
1962
63 years old, rebuilt 2002
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
113 ft
3 main spans
Daily traffic
460
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over S Fk Zumbro River is a steel stringer/multi-beam or girder carrying Csah 15 over S Fk Zumbro River in Olmsted County, Minnesota. It was built in 1962 and reconstructed in 2002, so it is 63 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 460 vehicles a day, projected to reach 584 by 2038. The structure is 113 ft (34.3 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCsah 15
CrossesS Fk Zumbro River
Location0.2 MI S of JCT CR 126
RouteCounty Highway 15
CountyOlmsted County
StateMinnesota
Coordinates43.93245, -92.57816
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length113 ft (34.3 m)
Longest span61 ft (18.7 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2018)
Projected traffic584 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 15 over S Fk Zumbro River built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2002.

What condition is Csah 15 over S Fk Zumbro River 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 November 2023.

How much traffic does Csah 15 over S Fk Zumbro River carry?

About 460 vehicles per day (2018 count).

How long is Csah 15 over S Fk Zumbro River?

The structure is 113 ft (34.3 m) long with a longest span of 61 ft (18.7 m) and a deck 33 ft wide.

Who owns Csah 15 over S Fk Zumbro River?

It is owned by the County Highway Agency.