US Bridges

S Union over Yeader Creek

Fair

Polk County, Iowa · 078242700 · Structure no. 000000000004071

Built
1976
49 years old, rebuilt 2014
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
4,106
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Union over Yeader Creek is a prestressed concrete stringer/multi-beam or girder carrying S Union over Yeader Creek in Polk County, Iowa. It was built in 1976 and reconstructed in 2014, so it is 49 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.

It carries about 4,106 vehicles a day, projected to reach 4,106 by 2043. The structure is 88 ft (26.8 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS Union
CrossesYeader Creek
Location078242700
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.53707, -93.61608
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating99 US tons
Inventory rating62.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length88 ft (26.8 m)
Longest span85 ft (25.9 m)
Deck width45 ft (13.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,106 (2022)
Projected traffic4,106 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$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S Union over Yeader Creek built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2014.

What condition is S Union over Yeader 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 S Union over Yeader Creek carry?

About 4,106 vehicles per day (2022 count).

How long is S Union over Yeader Creek?

The structure is 88 ft (26.8 m) long with a longest span of 85 ft (25.9 m) and a deck 45 ft wide.

Who owns S Union over Yeader Creek?

It is owned by the City or Municipal Highway Agency.