US Bridges

Ia 70 over Wapsinonoc Creek

Fair

Muscatine County, Iowa · 1.1 Mi. S of JCT US 6 · Structure no. 000000000038191

Built
1988
37 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
172 ft
3 main spans
Daily traffic
2,660
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 70 over Wapsinonoc Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 70 over Wapsinonoc Creek in Muscatine County, Iowa. It was built in 1988, so it is 37 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 2,660 vehicles a day, roughly 12% of them trucks, projected to reach 2,660 by 2044. The structure is 172 ft (52.4 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIa 70
CrossesWapsinonoc Creek
Location1.1 Mi. S of JCT US 6
RouteState Highway 70
CountyMuscatine County
StateIowa
Coordinates41.55719, -91.2547
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 rating91.9 US tons
Inventory rating55.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span82 ft (25 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,660 (2022)
Projected traffic2,660 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Ia 70 over Wapsinonoc Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Ia 70 over Wapsinonoc Creek 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 June 2024.

How much traffic does Ia 70 over Wapsinonoc Creek carry?

About 2,660 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Ia 70 over Wapsinonoc Creek?

The structure is 172 ft (52.4 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.

Who owns Ia 70 over Wapsinonoc Creek?

It is owned by the State Highway Agency.