US Bridges

Ia 22 over Donaldson Creek

Good

Scott County, Iowa · 2.8 Mi. W of I-280 · Structure no. 000000000047181

Built
2014
11 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
3,350
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 22 over Donaldson Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 22 over Donaldson Creek in Scott County, Iowa. It was built in 2014, so it is 11 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 3,350 vehicles a day, roughly 17% of them trucks, projected to reach 3,350 by 2044. The structure is 103 ft (31.4 m) long and 71 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesIa 22
CrossesDonaldson Creek
Location2.8 Mi. W of I-280
RouteState Highway 22
CountyScott County
StateIowa
Coordinates41.46435, -90.68144
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width71 ft (21.7 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,350 (2022)
Projected traffic3,350 by 2044
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Ia 22 over Donaldson Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Ia 22 over Donaldson 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 September 2024.

How much traffic does Ia 22 over Donaldson Creek carry?

About 3,350 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 22 over Donaldson Creek?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 71 ft wide.

Who owns Ia 22 over Donaldson Creek?

It is owned by the State Highway Agency.