US Bridges

Ia 4 & Ia 175 over Cedar Creek

Fair

Calhoun County, Iowa · 2.2 Mi. E of N JCT SR N65 · Structure no. 000000000016911

Built
1993
32 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
163 ft
3 main spans
Daily traffic
1,040
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 4 & Ia 175 over Cedar Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 4 & Ia 175 over Cedar Creek in Calhoun County, Iowa. It was built in 1993, so it is 32 years old, younger than the Iowa average of 45.5 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 1,040 vehicles a day, roughly 27% of them trucks, projected to reach 1,040 by 2044. The structure is 163 ft (49.7 m) long and 43 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesIa 4 & Ia 175
CrossesCedar Creek
Location2.2 Mi. E of N JCT SR N65
RouteState Highway 4
CountyCalhoun County
StateIowa
Coordinates42.26713, -94.50885
Functional classRural Minor Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span57 ft (17.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,040 (2022)
Projected traffic1,040 by 2044
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 4 & Ia 175 over Cedar Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Ia 4 & Ia 175 over Cedar Creek 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 May 2024.

How much traffic does Ia 4 & Ia 175 over Cedar Creek carry?

About 1,040 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is Ia 4 & Ia 175 over Cedar Creek?

The structure is 163 ft (49.7 m) long with a longest span of 57 ft (17.4 m) and a deck 43 ft wide.

Who owns Ia 4 & Ia 175 over Cedar Creek?

It is owned by the State Highway Agency.