US Bridges

C 57 over US 218 & Ia 27

Good

Black Hawk County, Iowa · 218 at C-57 Interchange · Structure no. 000000000700380

Built
2015
10 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
290 ft
2 main spans
Daily traffic
3,182
2022 count
Owner
State
State Highway Agency

About this bridge

C 57 over US 218 & Ia 27 is a prestressed concrete stringer/multi-beam or girder carrying C 57 over US 218 & Ia 27 in Black Hawk County, Iowa. It was built in 2015, so it is 10 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,182 vehicles a day, roughly 10% of them trucks, projected to reach 3,182 by 2043. The structure is 290 ft (88.4 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC 57
CrossesUS 218 & Ia 27
Location218 at C-57 Interchange
RouteCounty Highway 0
StateIowa
Coordinates42.61367, -92.44405
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length290 ft (88.4 m)
Longest span151 ft (46 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,182 (2022)
Projected traffic3,182 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was C 57 over US 218 & Ia 27 built?

It was built in 2015, making it 10 years old in 2025.

What condition is C 57 over US 218 & Ia 27 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does C 57 over US 218 & Ia 27 carry?

About 3,182 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is C 57 over US 218 & Ia 27?

The structure is 290 ft (88.4 m) long with a longest span of 151 ft (46 m) and a deck 63 ft wide.

Who owns C 57 over US 218 & Ia 27?

It is owned by the State Highway Agency.