US Bridges

Washngton St. over Mad Creek

Fair

Muscatine County, Iowa · 000000000 · Structure no. 000000000008431

Built
1986
39 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
7,906
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Washngton St. over Mad Creek is a concrete continuous slab carrying Washngton St. over Mad Creek in Muscatine County, Iowa. It was built in 1986, so it is 39 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 7,906 vehicles a day, projected to reach 7,906 by 2043. The structure is 100 ft (30.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWashngton St.
CrossesMad Creek
Location000000000
RouteCity Street 0
StateIowa
Coordinates41.43397, -91.03794
Functional classUrban Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.6 US tons
Inventory rating36.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span39 ft (11.9 m)
Deck width47 ft (14.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,906 (2022)
Projected traffic7,906 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 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 Washngton St. over Mad Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Washngton St. over Mad 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 November 2023.

How much traffic does Washngton St. over Mad Creek carry?

About 7,906 vehicles per day (2022 count).

How long is Washngton St. over Mad Creek?

The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 47 ft wide.

Who owns Washngton St. over Mad Creek?

It is owned by the City or Municipal Highway Agency.