US Bridges

6th ST over Ioway Creek

Good

Story County, Iowa · Brookside Park · Structure no. 000000000000181

Built
2016
9 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
265 ft
3 main spans
Daily traffic
3,863
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

6th ST over Ioway Creek is a prestressed concrete stringer/multi-beam or girder carrying 6th ST over Ioway Creek in Story County, Iowa. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,863 vehicles a day, projected to reach 3,863 by 2042. The structure is 265 ft (80.8 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries6th ST
CrossesIoway Creek
LocationBrookside Park
RouteCity Street 0
CountyStory County
StateIowa
Coordinates42.02765, -93.62874
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length265 ft (80.8 m)
Longest span107 ft (32.5 m)
Deck width53 ft (16.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,863 (2022)
Projected traffic3,863 by 2042
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 6th ST over Ioway Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is 6th ST over Ioway Creek 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 April 2024.

How much traffic does 6th ST over Ioway Creek carry?

About 3,863 vehicles per day (2022 count).

How long is 6th ST over Ioway Creek?

The structure is 265 ft (80.8 m) long with a longest span of 107 ft (32.5 m) and a deck 53 ft wide.

Who owns 6th ST over Ioway Creek?

It is owned by the City or Municipal Highway Agency.