US Bridges

US 69 over Ioway Creek

Good

Story County, Iowa · 0.6 Mi. N of Jct. US 30 · Structure no. 000000000048680

Built
1924
101 years old, rebuilt 2006
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
3 main spans
Daily traffic
24,600
2022 count
Owner
State
State Highway Agency

About this bridge

US 69 over Ioway Creek is a prestressed concrete stringer/multi-beam or girder carrying US 69 over Ioway Creek in Story County, Iowa. It was built in 1924 and reconstructed in 2006, so it is 101 years old, older 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 24,600 vehicles a day, roughly 2% of them trucks, projected to reach 24,600 by 2042. The structure is 212 ft (64.6 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 69
CrossesIoway Creek
Location0.6 Mi. N of Jct. US 30
RouteU.S. Route 69
StateIowa
Coordinates42.01327, -93.61029
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.6 US tons
Inventory rating33.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length212 ft (64.6 m)
Longest span70 ft (21.3 m)
Deck width87 ft (26.6 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,600 (2022)
Projected traffic24,600 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 69 over Ioway Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 2006.

What condition is US 69 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 September 2024.

How much traffic does US 69 over Ioway Creek carry?

About 24,600 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is US 69 over Ioway Creek?

The structure is 212 ft (64.6 m) long with a longest span of 70 ft (21.3 m) and a deck 87 ft wide.

Who owns US 69 over Ioway Creek?

It is owned by the State Highway Agency.