US Bridges

US 218 over Stream

Fair

Black Hawk County, Iowa · 0.5 Mi. S of Jct. SR D35 · Structure no. 000000000014820

Built
1952
73 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
3,480
2022 count
Owner
State
State Highway Agency

About this bridge

US 218 over Stream is a concrete continuous slab carrying US 218 over Stream in Black Hawk County, Iowa. It was built in 1952, so it is 73 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 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 3,480 vehicles a day, roughly 7% of them trucks, projected to reach 3,480 by 2042. The structure is 80 ft (24.4 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesUS 218
CrossesStream
Location0.5 Mi. S of Jct. SR D35
RouteU.S. Route 218
CountyBlack Hawk County
StateIowa
Coordinates42.39401, -92.25255
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length80 ft (24.4 m)
Longest span31 ft (9.4 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,480 (2022)
Projected traffic3,480 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 US 218 over Stream built?

It was built in 1952, making it 73 years old in 2025.

What condition is US 218 over Stream 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 April 2024.

How much traffic does US 218 over Stream carry?

About 3,480 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US 218 over Stream?

The structure is 80 ft (24.4 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.

Who owns US 218 over Stream?

It is owned by the State Highway Agency.