US Bridges

SB US 61 over Wapsipinicon River

Fair

Scott County, Iowa · 2.4 Mi. N of S.R. F33 · Structure no. 000000000604550

Built
1981
44 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
630 ft
5 main spans
Daily traffic
8,800
2022 count
Owner
State
State Highway Agency

About this bridge

SB US 61 over Wapsipinicon River is a steel continuous stringer/multi-beam or girder carrying SB US 61 over Wapsipinicon River in Scott County, Iowa. It was built in 1981, so it is 44 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,800 vehicles a day, roughly 16% of them trucks, projected to reach 8,800 by 2044. The structure is 630 ft (192 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSB US 61
CrossesWapsipinicon River
Location2.4 Mi. N of S.R. F33
RouteU.S. Route 61
CountyScott County
StateIowa
Coordinates41.76413, -90.56818
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.8 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length630 ft (192 m)
Longest span137 ft (41.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2022)
Projected traffic8,800 by 2044
Trucks16%
Lanes on structure2
Traffic directionOne-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 SB US 61 over Wapsipinicon River built?

It was built in 1981, making it 44 years old in 2025.

What condition is SB US 61 over Wapsipinicon 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 August 2024.

How much traffic does SB US 61 over Wapsipinicon River carry?

About 8,800 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is SB US 61 over Wapsipinicon River?

The structure is 630 ft (192 m) long with a longest span of 137 ft (41.8 m) and a deck 43 ft wide.

Who owns SB US 61 over Wapsipinicon River?

It is owned by the State Highway Agency.