US Bridges

WB I-235 over UP RR

Good

Polk County, Iowa · 0.2 Mile E of JCT Ia 163 · Structure no. 000000000042961

Built
2004
21 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
377 ft
3 main spans
Daily traffic
35,150
2022 count
Owner
State
State Highway Agency

About this bridge

WB I-235 over UP RR is a steel continuous stringer/multi-beam or girder carrying WB I-235 over UP RR in Polk County, Iowa. It was built in 2004, so it is 21 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 35,150 vehicles a day, roughly 8% of them trucks, projected to reach 35,150 by 2044. The structure is 377 ft (114.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWB I-235
CrossesUP RR
Location0.2 Mile E of JCT Ia 163
RouteInterstate 235
StateIowa
Coordinates41.60218, -93.5822
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
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 rating99.6 US tons
Inventory rating59.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length377 ft (114.9 m)
Longest span181 ft (55.2 m)
Deck width63 ft (19.1 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,150 (2022)
Projected traffic35,150 by 2044
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 UP RR built?

It was built in 2004, making it 21 years old in 2025.

What condition is WB I-235 over UP RR 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 2024.

How much traffic does WB I-235 over UP RR carry?

About 35,150 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is WB I-235 over UP RR?

The structure is 377 ft (114.9 m) long with a longest span of 181 ft (55.2 m) and a deck 63 ft wide.

Who owns WB I-235 over UP RR?

It is owned by the State Highway Agency.