US Bridges

Csah 14 over Upper Iowa River

Poor

Mower County, Minnesota · 0.2 MI N of JCT TH 56 · Structure no. 7148

Built
1955
70 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
148 ft
2 main spans
Daily traffic
1,400
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 14 over Upper Iowa River is a steel stringer/multi-beam or girder carrying Csah 14 over Upper Iowa River in Mower County, Minnesota. It was built in 1955, so it is 70 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,400 vehicles a day, projected to reach 1,400 by 2039. The structure is 148 ft (45.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 14
CrossesUpper Iowa River
Location0.2 MI N of JCT TH 56
RouteCounty Highway 14
CountyMower County
StateMinnesota
Coordinates43.51513, -92.50893
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length148 ft (45.1 m)
Longest span71 ft (21.6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2016)
Projected traffic1,400 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$666 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 14 over Upper Iowa River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Csah 14 over Upper Iowa River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Csah 14 over Upper Iowa River carry?

About 1,400 vehicles per day (2016 count).

How long is Csah 14 over Upper Iowa River?

The structure is 148 ft (45.1 m) long with a longest span of 71 ft (21.6 m) and a deck 27 ft wide.

Who owns Csah 14 over Upper Iowa River?

It is owned by the County Highway Agency.