US Bridges

EB I-235 over Union Pacific RR

Good

Polk County, Iowa · 0.2 Mile E of JCT Ia 163 · Structure no. 000000000042951

Built
2004
21 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
373 ft
3 main spans
Daily traffic
36,950
2022 count
Owner
State
State Highway Agency

About this bridge

EB I-235 over Union Pacific RR is a steel continuous stringer/multi-beam or girder carrying EB I-235 over Union Pacific 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 36,950 vehicles a day, roughly 8% of them trucks, projected to reach 36,950 by 2043. The structure is 373 ft (113.7 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesEB I-235
CrossesUnion Pacific RR
Location0.2 Mile E of JCT Ia 163
RouteInterstate 235
CountyPolk County
StateIowa
Coordinates41.6014, -93.58327
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 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 rating89.2 US tons
Inventory rating53.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length373 ft (113.7 m)
Longest span181 ft (55.2 m)
Deck width74 ft (22.7 m)
Roadway width71 ft (21.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,950 (2022)
Projected traffic36,950 by 2043
Trucks8%
Lanes on structure4
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 EB I-235 over Union Pacific RR built?

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

What condition is EB I-235 over Union Pacific 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 November 2023.

How much traffic does EB I-235 over Union Pacific RR carry?

About 36,950 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is EB I-235 over Union Pacific RR?

The structure is 373 ft (113.7 m) long with a longest span of 181 ft (55.2 m) and a deck 74 ft wide.

Who owns EB I-235 over Union Pacific RR?

It is owned by the State Highway Agency.