US Bridges

255th ST over Creek

FairPosted for load

Scott County, Iowa · 079E20603 · Structure no. 000000000302500

Built
1965
60 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
127 ft
3 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

255th ST over Creek is a steel continuous stringer/multi-beam or girder carrying 255th ST over Creek in Scott County, Iowa. It was built in 1965, so it is 60 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 26 by 2043. The structure is 127 ft (38.7 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries255th ST
CrossesCreek
Location079E20603
RouteCounty Highway 0
CountyScott County
StateIowa
Coordinates41.67662, -90.76421
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length127 ft (38.7 m)
Longest span49 ft (14.9 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 255th ST over Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is 255th ST over 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 April 2023.

How much traffic does 255th ST over Creek carry?

About 26 vehicles per day (2022 count).

How long is 255th ST over Creek?

The structure is 127 ft (38.7 m) long with a longest span of 49 ft (14.9 m) and a deck 25 ft wide.

Who owns 255th ST over Creek?

It is owned by the County Highway Agency.