US Bridges

A42 370th ST over E Fork Des Moines River

Good

Kossuth County, Iowa · 098291901 · Structure no. 000000000216551

Built
2021
4 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
141 ft
3 main spans
Daily traffic
489
2022 count
Owner
County
County Highway Agency

About this bridge

A42 370th ST over E Fork Des Moines River is a concrete continuous slab carrying A42 370th ST over E Fork Des Moines River in Kossuth County, Iowa. It was built in 2021, so it is 4 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 489 vehicles a day, roughly 21% of them trucks, projected to reach 489 by 2043. The structure is 141 ft (43 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesA42 370th ST
CrossesE Fork Des Moines River
Location098291901
RouteCounty Highway 0
StateIowa
Coordinates43.29828, -94.32425
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.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length141 ft (43 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic489 (2022)
Projected traffic489 by 2043
Trucks21%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was A42 370th ST over E Fork Des Moines River built?

It was built in 2021, making it 4 years old in 2025.

What condition is A42 370th ST over E Fork Des Moines River 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 June 2023.

How much traffic does A42 370th ST over E Fork Des Moines River carry?

About 489 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is A42 370th ST over E Fork Des Moines River?

The structure is 141 ft (43 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns A42 370th ST over E Fork Des Moines River?

It is owned by the County Highway Agency.