US Bridges

Broadway ST over Small Stream

Fair

Black Hawk County, Iowa · City Culvert No. 22C · Structure no. 000000000014615

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
3,506
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway ST over Small Stream is a concrete continuous culvert carrying Broadway ST over Small Stream in Black Hawk County, Iowa. It was built in 1974, so it is 51 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 3,506 vehicles a day, projected to reach 3,506 by 2043. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesBroadway ST
CrossesSmall Stream
LocationCity Culvert No. 22C
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.5347, -92.37454
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating51.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,506 (2022)
Projected traffic3,506 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadway ST over Small Stream built?

It was built in 1974, making it 51 years old in 2025.

What condition is Broadway ST over Small 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 June 2023.

How much traffic does Broadway ST over Small Stream carry?

About 3,506 vehicles per day (2022 count).

How long is Broadway ST over Small Stream?

The structure is 50 ft (15.2 m) long with a longest span of 18 ft (5.5 m).

Who owns Broadway ST over Small Stream?

It is owned by the City or Municipal Highway Agency.