US Bridges

College ST over Drainage

Good

Black Hawk County, Iowa · 000000000 · Structure no. 000000000001121

Built
2007
18 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
9,480
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

College ST over Drainage is a concrete continuous culvert carrying College ST over Drainage in Black Hawk County, Iowa. It was built in 2007, so it is 18 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 9,480 vehicles a day, projected to reach 9,480 by 2044. The structure is 25 ft (7.6 m) long.

CarriesCollege ST
CrossesDrainage
Location000000000
RouteCity Street 0
StateIowa
Coordinates42.51924, -92.45578
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.4 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,480 (2022)
Projected traffic9,480 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was College ST over Drainage built?

It was built in 2007, making it 18 years old in 2025.

What condition is College ST over Drainage 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 March 2024.

How much traffic does College ST over Drainage carry?

About 9,480 vehicles per day (2022 count).

How long is College ST over Drainage?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns College ST over Drainage?

It is owned by the City or Municipal Highway Agency.