US Bridges

East ST over Wolf Creek

Poor

Tama County, Iowa · 085161002 · Structure no. 000000000005550

Built
1950
75 years old, rebuilt 1990
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
182 ft
3 main spans
Daily traffic
779
2022 count
Owner
County
County Highway Agency

About this bridge

East ST over Wolf Creek is a steel continuous stringer/multi-beam or girder carrying East ST over Wolf Creek in Tama County, Iowa. It was built in 1950 and reconstructed in 1990, so it is 75 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 779 vehicles a day, projected to reach 779 by 2044. The structure is 182 ft (55.5 m) long and 33 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesEast ST
CrossesWolf Creek
Location085161002
RouteCity Street 0
CountyTama County
StateIowa
Coordinates42.18748, -92.70879
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating41.8 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length182 ft (55.5 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic779 (2022)
Projected traffic779 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was East ST over Wolf Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1990.

What condition is East ST over Wolf Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does East ST over Wolf Creek carry?

About 779 vehicles per day (2022 count).

How long is East ST over Wolf Creek?

The structure is 182 ft (55.5 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns East ST over Wolf Creek?

It is owned by the County Highway Agency.