E29 190th ST over Minerva Creek

Good

Marshall County, Iowa · 084202001 · Structure no. 000000000243851

Built: 2001; 24 years old
Condition: Good; inspected November 2023
Type: Culvert; Concrete Continuous
Length: 35 ft; 2 main spans
Daily traffic: 383; 2022 count
Owner: County; County Highway Agency

About this bridge

E29 190th ST over Minerva Creek is a concrete continuous culvert carrying E29 190th ST over Minerva Creek in Marshall County, Iowa. It was built in 2001, so it is 24 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 383 vehicles a day, roughly 12% of them trucks, projected to reach 383 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps

CarriesE29 190th ST

CrossesMinerva Creek

Location084202001

RouteCounty Highway 0

CountyMarshall County

StateIowa

Coordinates42.07761, -93.19528

Functional classRural Major Collector

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
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionNovember 2023

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating48.6 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHS 20

Structure length35 ft (10.7 m)

Longest span17 ft (5.2 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic383 (2022)

Projected traffic383 by 2043

Trucks12%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.2 mi (10 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency

Maintained byCounty Highway Agency

Historic statusPossibly eligible for the National Register; requires further investigation

Work proposedOther structural work, including hydraulic replacements

Estimated improvement cost$30,000 (2024 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was E29 190th ST over Minerva Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is E29 190th ST over Minerva 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 November 2023.

How much traffic does E29 190th ST over Minerva Creek carry?

About 383 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is E29 190th ST over Minerva Creek?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m).

Who owns E29 190th ST over Minerva Creek?

It is owned by the County Highway Agency.