US Bridges

Ia 1 over Rapid Creek

Fair

Johnson County, Iowa · 1.1 Mi. N of Jct. I-80 · Structure no. 000000000031790

Built
1967
58 years old, rebuilt 2010
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
9,800
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 1 over Rapid Creek is a concrete continuous slab carrying Ia 1 over Rapid Creek in Johnson County, Iowa. It was built in 1967 and reconstructed in 2010, so it is 58 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 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 9,800 vehicles a day, roughly 8% of them trucks, projected to reach 9,800 by 2044. The structure is 128 ft (39 m) long and 61 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 1
CrossesRapid Creek
Location1.1 Mi. N of Jct. I-80
RouteState Highway 1
CountyJohnson County
StateIowa
Coordinates41.70001, -91.48811
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width61 ft (18.7 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2022)
Projected traffic9,800 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 1 over Rapid Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2010.

What condition is Ia 1 over Rapid 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 July 2023.

How much traffic does Ia 1 over Rapid Creek carry?

About 9,800 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ia 1 over Rapid Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 61 ft wide.

Who owns Ia 1 over Rapid Creek?

It is owned by the State Highway Agency.