US Bridges

Csah 15 over I 35

Fair

Rice County, Minnesota · 5.0 MI S of JCT TH 60 · Structure no. 66822

Built
1963
62 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
301 ft
6 main spans
Daily traffic
550
2016 count
Owner
State
State Highway Agency

About this bridge

Csah 15 over I 35 is a prestressed concrete stringer/multi-beam or girder carrying Csah 15 over I 35 in Rice 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 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.

It carries about 550 vehicles a day, projected to reach 550 by 2039. The structure is 301 ft (91.7 m) long and 33 ft wide.

CarriesCsah 15
CrossesI 35
Location5.0 MI S of JCT TH 60
RouteCounty Highway 15
Coordinates44.22542, -93.27718
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.9 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length301 ft (91.7 m)
Longest span63 ft (19.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2016)
Projected traffic550 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 15 over I 35 built?

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

What condition is Csah 15 over I 35 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 August 2023.

How much traffic does Csah 15 over I 35 carry?

About 550 vehicles per day (2016 count).

How long is Csah 15 over I 35?

The structure is 301 ft (91.7 m) long with a longest span of 63 ft (19.1 m) and a deck 33 ft wide.

Who owns Csah 15 over I 35?

It is owned by the State Highway Agency.