US Bridges

I 35 SB over Grand Ave

Fair

Polk County, Iowa · At Jct. of Grand Ave. · Structure no. 000000000041191

Built
2013
12 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
287 ft
3 main spans
Daily traffic
25,300
2023 count
Owner
State
State Highway Agency

About this bridge

I 35 SB over Grand Ave is a prestressed concrete stringer/multi-beam or girder carrying I 35 SB over Grand Ave in Polk County, Iowa. It was built in 2013, so it is 12 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 25,300 vehicles a day, roughly 15% of them trucks, projected to reach 25,300 by 2043. The structure is 287 ft (87.5 m) long and 67 ft wide.

Location

Open in Google Maps
CarriesI 35 SB
CrossesGrand Ave
LocationAt Jct. of Grand Ave.
RouteInterstate 35
CountyPolk County
StateIowa
Coordinates41.54156, -93.77535
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: 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 spans3
Design loadHL 93
Structure length287 ft (87.5 m)
Longest span136 ft (41.5 m)
Deck width67 ft (20.3 m)
Roadway width63 ft (19.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,300 (2023)
Projected traffic25,300 by 2043
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 I 35 SB over Grand Ave built?

It was built in 2013, making it 12 years old in 2025.

What condition is I 35 SB over Grand Ave in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does I 35 SB over Grand Ave carry?

About 25,300 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I 35 SB over Grand Ave?

The structure is 287 ft (87.5 m) long with a longest span of 136 ft (41.5 m) and a deck 67 ft wide.

Who owns I 35 SB over Grand Ave?

It is owned by the State Highway Agency.