US Bridges

Main ST over Aurelia Creek

Poor

Cherokee County, Iowa · 091391001 · Structure no. 000000000501850

Built
1939
86 years old
Condition
Poor
inspected August 2023
Type
Arch - Deck
Steel
Length
35 ft
2 main spans
Daily traffic
841
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Aurelia Creek is a steel arch - deck carrying Main ST over Aurelia Creek in Cherokee County, Iowa. It was built in 1939, so it is 86 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 841 vehicles a day, roughly 18% of them trucks, projected to reach 841 by 2043. The structure is 35 ft (10.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMain ST
CrossesAurelia Creek
Location091391001
RouteCity Street 0
CountyCherokee County
StateIowa
Coordinates42.70687, -95.43718
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
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic841 (2022)
Projected traffic841 by 2043
Trucks18%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Aurelia Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is Main ST over Aurelia 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 August 2023.

How much traffic does Main ST over Aurelia Creek carry?

About 841 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Main ST over Aurelia Creek?

The structure is 35 ft (10.7 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns Main ST over Aurelia Creek?

It is owned by the City or Municipal Highway Agency.