US Bridges

290th over Shell Rock River

Good

Cerro Gordo County, Iowa · 097193503 · Structure no. 000000000106601

Built
1998
27 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
201 ft
3 main spans
Daily traffic
47
2022 count
Owner
County
County Highway Agency

About this bridge

290th over Shell Rock River is a prestressed concrete stringer/multi-beam or girder carrying 290th over Shell Rock River in Cerro Gordo County, Iowa. It was built in 1998, so it is 27 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 47 vehicles a day, projected to reach 47 by 2044. The structure is 201 ft (61.3 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries290th
CrossesShell Rock River
Location097193503
RouteCounty Highway 0
StateIowa
Coordinates43.18369, -93.05356
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.4 US tons
Inventory rating41.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length201 ft (61.3 m)
Longest span73 ft (22.3 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47 (2022)
Projected traffic47 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 290th over Shell Rock River built?

It was built in 1998, making it 27 years old in 2025.

What condition is 290th over Shell Rock 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 January 2024.

How much traffic does 290th over Shell Rock River carry?

About 47 vehicles per day (2022 count).

How long is 290th over Shell Rock River?

The structure is 201 ft (61.3 m) long with a longest span of 73 ft (22.3 m) and a deck 26 ft wide.

Who owns 290th over Shell Rock River?

It is owned by the County Highway Agency.