US Bridges

US 218 over Cedar Rvr & Trail

Fair

Black Hawk County, Iowa · 2.9 Mi. S Jct. Ia #57 · Structure no. 000000000605925

Built
1989
36 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
828 ft
9 main spans
Daily traffic
21,500
2022 count
Owner
State
State Highway Agency

About this bridge

US 218 over Cedar Rvr & Trail is a prestressed concrete stringer/multi-beam or girder carrying US 218 over Cedar Rvr & Trail in Black Hawk County, Iowa. It was built in 1989, so it is 36 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 21,500 vehicles a day, roughly 10% of them trucks, projected to reach 21,500 by 2043. The structure is 828 ft (252.4 m) long and 128 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 218
CrossesCedar Rvr & Trail
Location2.9 Mi. S Jct. Ia #57
RouteU.S. Route 218
StateIowa
Coordinates42.51958, -92.38979
Functional classUrban Other Principal 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.7 US tons
Inventory rating46.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length828 ft (252.4 m)
Longest span92 ft (28 m)
Deck width128 ft (39 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,500 (2022)
Projected traffic21,500 by 2043
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 US 218 over Cedar Rvr & Trail built?

It was built in 1989, making it 36 years old in 2025.

What condition is US 218 over Cedar Rvr & Trail 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 September 2023.

How much traffic does US 218 over Cedar Rvr & Trail carry?

About 21,500 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is US 218 over Cedar Rvr & Trail?

The structure is 828 ft (252.4 m) long with a longest span of 92 ft (28 m) and a deck 128 ft wide.

Who owns US 218 over Cedar Rvr & Trail?

It is owned by the State Highway Agency.