US Bridges

100th Street over Prairie Creek

Good

Clinton County, Iowa · 083E20201 · Structure no. 000000000124632

Built
2006
19 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete Continuous
Length
112 ft
3 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

100th Street over Prairie Creek is a concrete continuous slab carrying 100th Street over Prairie Creek in Clinton County, Iowa. It was built in 2006, so it is 19 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11 vehicles a day, projected to reach 11 by 2045. The structure is 112 ft (34.1 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries100th Street
CrossesPrairie Creek
Location083E20201
RouteCounty Highway 0
StateIowa
Coordinates42.03282, -90.69926
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating73.4 US tons
Inventory rating44.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span44 ft (13.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 100th Street over Prairie Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is 100th Street over Prairie Creek 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 2025.

How much traffic does 100th Street over Prairie Creek carry?

About 11 vehicles per day (2022 count).

How long is 100th Street over Prairie Creek?

The structure is 112 ft (34.1 m) long with a longest span of 44 ft (13.4 m) and a deck 33 ft wide.

Who owns 100th Street over Prairie Creek?

It is owned by the County Highway Agency.