US Bridges

2nd Ave S over Shell Rock River

FairPosted for load

Worth County, Iowa · 000000000 · Structure no. 000000000008795

Built
1959
66 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
90 ft
7 main spans
Daily traffic
123
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

2nd Ave S over Shell Rock River is a concrete continuous slab carrying 2nd Ave S over Shell Rock River in Worth County, Iowa. It was built in 1959, so it is 66 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 123 vehicles a day, projected to reach 123 by 2043. The structure is 90 ft (27.4 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries2nd Ave S
CrossesShell Rock River
Location000000000
RouteCity Street 0
CountyWorth County
StateIowa
Coordinates43.44147, -93.22389
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating14.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadOther
Structure length90 ft (27.4 m)
Longest span14 ft (4.3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic123 (2022)
Projected traffic123 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$373,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 2nd Ave S over Shell Rock River built?

It was built in 1959, making it 66 years old in 2025.

What condition is 2nd Ave S over Shell Rock River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does 2nd Ave S over Shell Rock River carry?

About 123 vehicles per day (2022 count).

How long is 2nd Ave S over Shell Rock River?

The structure is 90 ft (27.4 m) long with a longest span of 14 ft (4.3 m) and a deck 22 ft wide.

Who owns 2nd Ave S over Shell Rock River?

It is owned by the City or Municipal Highway Agency.