US Bridges

Mccollister Blv over Iowa River

Good

Johnson County, Iowa · 079062201 · Structure no. 000000000504890

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
396 ft
3 main spans
Daily traffic
6,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mccollister Blv over Iowa River is a prestressed concrete stringer/multi-beam or girder carrying Mccollister Blv over Iowa River in Johnson County, Iowa. It was built in 2009, so it is 16 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 6,000 vehicles a day, projected to reach 6,000 by 2043. The structure is 396 ft (120.7 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMccollister Blv
CrossesIowa River
Location079062201
RouteCity Street 0
CountyJohnson County
StateIowa
Coordinates41.62873, -91.53351
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length396 ft (120.7 m)
Longest span132 ft (40.2 m)
Deck width58 ft (17.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2022)
Projected traffic6,000 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mccollister Blv over Iowa River built?

It was built in 2009, making it 16 years old in 2025.

What condition is Mccollister Blv over Iowa River 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 July 2023.

How much traffic does Mccollister Blv over Iowa River carry?

About 6,000 vehicles per day (2022 count).

How long is Mccollister Blv over Iowa River?

The structure is 396 ft (120.7 m) long with a longest span of 132 ft (40.2 m) and a deck 58 ft wide.

Who owns Mccollister Blv over Iowa River?

It is owned by the City or Municipal Highway Agency.