US Bridges

So 3rd Ave over Anson Creek

Poor

Marshall County, Iowa · 083181102 · Structure no. 000000000502820

Built
1979
46 years old
Condition
Poor
inspected July 2023
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
418
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

So 3rd Ave over Anson Creek is a concrete continuous culvert carrying So 3rd Ave over Anson Creek in Marshall County, Iowa. It was built in 1979, so it is 46 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 418 vehicles a day, projected to reach 418 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 62.1 mi (100 km).

Location

Open in Google Maps
CarriesSo 3rd Ave
CrossesAnson Creek
Location083181102
RouteCity Street 0
CountyMarshall County
StateIowa
Coordinates42.01656, -92.90516
Functional classUrban Local

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic418 (2022)
Projected traffic418 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed62.1 mi (100 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was So 3rd Ave over Anson Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is So 3rd Ave over Anson 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 July 2023.

How much traffic does So 3rd Ave over Anson Creek carry?

About 418 vehicles per day (2022 count).

How long is So 3rd Ave over Anson Creek?

The structure is 36 ft (11 m) long with a longest span of 11 ft (3.4 m).

Who owns So 3rd Ave over Anson Creek?

It is owned by the City or Municipal Highway Agency.