US Bridges

Ia 57 over W Branch Cedar River

Fair

Hardin County, Iowa · 1.6 Miles West of SR S56 · Structure no. 000000000027030

Built
1960
65 years old, rebuilt 1984
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
1,940
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 57 over W Branch Cedar River is a steel stringer/multi-beam or girder carrying Ia 57 over W Branch Cedar River in Hardin County, Iowa. It was built in 1960 and reconstructed in 1984, so it is 65 years old, older 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 5 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 1,940 vehicles a day, roughly 14% of them trucks, projected to reach 1,940 by 2043. The structure is 54 ft (16.5 m) long and 48 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIa 57
CrossesW Branch Cedar River
Location1.6 Miles West of SR S56
RouteState Highway 57
StateIowa
Coordinates42.55672, -93.08719
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length54 ft (16.5 m)
Longest span52 ft (15.9 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,940 (2023)
Projected traffic1,940 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 57 over W Branch Cedar River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1984.

What condition is Ia 57 over W Branch Cedar 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 July 2024.

How much traffic does Ia 57 over W Branch Cedar River carry?

About 1,940 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Ia 57 over W Branch Cedar River?

The structure is 54 ft (16.5 m) long with a longest span of 52 ft (15.9 m) and a deck 48 ft wide.

Who owns Ia 57 over W Branch Cedar River?

It is owned by the State Highway Agency.