500th Ave over Carruthers Creek

Good

Monroe County, Iowa · 073190602 · Structure no. 000000000253811

Built: 2014; 11 years old
Condition: Good; inspected December 2020
Type: Slab; Concrete Continuous
Length: 111 ft; 3 main spans
Daily traffic: 45; 2022 count
Owner: County; County Highway Agency

About this bridge

500th Ave over Carruthers Creek is a concrete continuous slab carrying 500th Ave over Carruthers Creek in Monroe County, Iowa. It was built in 2014, so it is 11 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45 vehicles a day, projected to reach 45 by 2043. The structure is 111 ft (33.8 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries500th Ave

CrossesCarruthers Creek

Location073190602

RouteCounty Highway 0

CountyMonroe County

StateIowa

Coordinates41.15373, -93.09916

Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.
Channel and channel protection	8 Very Good	No problems noted.

Last inspectionDecember 2020

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation8: Equal to present desirable criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy9: Superior to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating46.4 US tons

Inventory rating35.7 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHL 93

Structure length111 ft (33.8 m)

Longest span43 ft (13.1 m)

Deck width27 ft (8.3 m)

Roadway width25 ft (7.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)

Projected traffic45 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

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 500th Ave over Carruthers Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is 500th Ave over Carruthers Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2020.

How much traffic does 500th Ave over Carruthers Creek carry?

About 45 vehicles per day (2022 count).

How long is 500th Ave over Carruthers Creek?

The structure is 111 ft (33.8 m) long with a longest span of 43 ft (13.1 m) and a deck 27 ft wide.

Who owns 500th Ave over Carruthers Creek?

It is owned by the County Highway Agency.