US Bridges

Sb(eb) Polk Blv over I-235

Good

Polk County, Iowa · 1.1 Miles E of JCT Ia 28 · Structure no. 000000000042331

Built
2003
22 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
205 ft
2 main spans
Daily traffic
4,037
2022 count
Owner
State
State Highway Agency

About this bridge

Sb(eb) Polk Blv over I-235 is a prestressed concrete stringer/multi-beam or girder carrying Sb(eb) Polk Blv over I-235 in Polk County, Iowa. It was built in 2003, so it is 22 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 4,037 vehicles a day, projected to reach 4,037 by 2044. The structure is 205 ft (62.5 m) long and 37 ft wide.

Location

Open in Google Maps
CarriesSb(eb) Polk Blv
CrossesI-235
Location1.1 Miles E of JCT Ia 28
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.592, -93.68171
Functional classUrban Collector

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.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 spans2
Design loadHL 93
Structure length205 ft (62.5 m)
Longest span101 ft (30.8 m)
Deck width37 ft (11.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic4,037 (2022)
Projected traffic4,037 by 2044
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 Sb(eb) Polk Blv over I-235 built?

It was built in 2003, making it 22 years old in 2025.

What condition is Sb(eb) Polk Blv over I-235 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 May 2024.

How much traffic does Sb(eb) Polk Blv over I-235 carry?

About 4,037 vehicles per day (2022 count).

How long is Sb(eb) Polk Blv over I-235?

The structure is 205 ft (62.5 m) long with a longest span of 101 ft (30.8 m) and a deck 37 ft wide.

Who owns Sb(eb) Polk Blv over I-235?

It is owned by the State Highway Agency.