US Bridges

Scott Ave over Four Mile Creek

Fair

Polk County, Iowa · F20610970 · Structure no. 000000000003689

Built
1993
32 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
3 main spans
Daily traffic
2,694
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Scott Ave over Four Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying Scott Ave over Four Mile Creek in Polk County, Iowa. It was built in 1993, so it is 32 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 2,694 vehicles a day, projected to reach 2,694 by 2043. The structure is 243 ft (74.1 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesScott Ave
CrossesFour Mile Creek
LocationF20610970
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.58317, -93.53306
Functional classUrban Collector

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating95.3 US tons
Inventory rating57.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span81 ft (24.7 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,694 (2022)
Projected traffic2,694 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Scott Ave over Four Mile Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Scott Ave over Four Mile 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 Scott Ave over Four Mile Creek carry?

About 2,694 vehicles per day (2022 count).

How long is Scott Ave over Four Mile Creek?

The structure is 243 ft (74.1 m) long with a longest span of 81 ft (24.7 m) and a deck 45 ft wide.

Who owns Scott Ave over Four Mile Creek?

It is owned by the City or Municipal Highway Agency.