US Bridges

US 30 over Worrell Creek

Good

Story County, Iowa · 2.0 Mi. W of Jct. U.S. 69 · Structure no. 000000000048672

Built
1971
54 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
23,700
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Worrell Creek is a concrete continuous culvert carrying US 30 over Worrell Creek in Story County, Iowa. It was built in 1971, so it is 54 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 23,700 vehicles a day, roughly 8% of them trucks, projected to reach 23,700 by 2043. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 30
CrossesWorrell Creek
Location2.0 Mi. W of Jct. U.S. 69
RouteU.S. Route 30
StateIowa
Coordinates42.00467, -93.64815
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 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 rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 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 traffic23,700 (2022)
Projected traffic23,700 by 2043
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
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 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 30 over Worrell Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is US 30 over Worrell 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 2023.

How much traffic does US 30 over Worrell Creek carry?

About 23,700 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US 30 over Worrell Creek?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns US 30 over Worrell Creek?

It is owned by the State Highway Agency.