US Bridges

US 65 over Dye Creek

Good

Story County, Iowa · 1.8 Mi. N of US 30 · Structure no. 000000000048901

Built
1979
46 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
2,110
2022 count
Owner
State
State Highway Agency

About this bridge

US 65 over Dye Creek is a concrete continuous culvert carrying US 65 over Dye Creek in Story County, Iowa. It was built in 1979, so it is 46 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 2,110 vehicles a day, roughly 20% of them trucks, projected to reach 2,110 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesUS 65
CrossesDye Creek
Location1.8 Mi. N of US 30
RouteU.S. Route 65
StateIowa
Coordinates42.03428, -93.30949
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,110 (2022)
Projected traffic2,110 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
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 US 65 over Dye Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is US 65 over Dye 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 October 2023.

How much traffic does US 65 over Dye Creek carry?

About 2,110 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is US 65 over Dye Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns US 65 over Dye Creek?

It is owned by the State Highway Agency.