US Bridges

23rd ST over Duck Creek

Fair

Scott County, Iowa · Bettendorf Ia · Structure no. 000000000000680

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
217 ft
3 main spans
Daily traffic
5,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

23rd ST over Duck Creek is a prestressed concrete stringer/multi-beam or girder carrying 23rd ST over Duck Creek in Scott County, Iowa. It was built in 1969, so it is 56 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 5,500 vehicles a day, projected to reach 5,500 by 2043. The structure is 217 ft (66.1 m) long and 53 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries23rd ST
CrossesDuck Creek
LocationBettendorf Ia
RouteCity Street 0
CountyScott County
StateIowa
Coordinates41.54185, -90.49895
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.
Superstructure7 GoodSome minor problems.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length217 ft (66.1 m)
Longest span81 ft (24.7 m)
Deck width53 ft (16.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2022)
Projected traffic5,500 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 23rd ST over Duck Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is 23rd ST over Duck 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 23rd ST over Duck Creek carry?

About 5,500 vehicles per day (2022 count).

How long is 23rd ST over Duck Creek?

The structure is 217 ft (66.1 m) long with a longest span of 81 ft (24.7 m) and a deck 53 ft wide.

Who owns 23rd ST over Duck Creek?

It is owned by the City or Municipal Highway Agency.