US Bridges

WB I-235 over Guthrie Ave

Good

Polk County, Iowa · 1.2 Miles E of JCT Ia 163 · Structure no. 000000000043011

Built
2006
19 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
178 ft
3 main spans
Daily traffic
33,900
2022 count
Owner
State
State Highway Agency

About this bridge

WB I-235 over Guthrie Ave is a prestressed concrete stringer/multi-beam or girder carrying WB I-235 over Guthrie Ave in Polk 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 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 33,900 vehicles a day, roughly 8% of them trucks, projected to reach 33,900 by 2043. The structure is 178 ft (54.3 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWB I-235
CrossesGuthrie Ave
Location1.2 Miles E of JCT Ia 163
RouteInterstate 235
StateIowa
Coordinates41.61524, -93.57753
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating63.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length178 ft (54.3 m)
Longest span106 ft (32.3 m)
Deck width66 ft (20 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,900 (2022)
Projected traffic33,900 by 2043
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB I-235 over Guthrie Ave built?

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

What condition is WB I-235 over Guthrie Ave 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 December 2023.

How much traffic does WB I-235 over Guthrie Ave carry?

About 33,900 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is WB I-235 over Guthrie Ave?

The structure is 178 ft (54.3 m) long with a longest span of 106 ft (32.3 m) and a deck 66 ft wide.

Who owns WB I-235 over Guthrie Ave?

It is owned by the State Highway Agency.