US Bridges

US 65 over Shellrock River

Good

Worth County, Iowa · 0.9 Mi. N of SR A34 · Structure no. 000000000053971

Built
1983
42 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
192 ft
4 main spans
Daily traffic
2,020
2023 count
Owner
State
State Highway Agency

About this bridge

US 65 over Shellrock River is a concrete continuous slab carrying US 65 over Shellrock River in Worth County, Iowa. It was built in 1983, so it is 42 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 2,020 vehicles a day, roughly 14% of them trucks, projected to reach 2,020 by 2043. The structure is 192 ft (58.5 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 65
CrossesShellrock River
Location0.9 Mi. N of SR A34
RouteU.S. Route 65
StateIowa
Coordinates43.39881, -93.21065
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.5 US tons
Inventory rating14.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span53 ft (16.2 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,020 (2023)
Projected traffic2,020 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Shellrock River built?

It was built in 1983, making it 42 years old in 2025.

What condition is US 65 over Shellrock 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 August 2023.

How much traffic does US 65 over Shellrock River carry?

About 2,020 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 65 over Shellrock River?

The structure is 192 ft (58.5 m) long with a longest span of 53 ft (16.2 m) and a deck 47 ft wide.

Who owns US 65 over Shellrock River?

It is owned by the State Highway Agency.