US Bridges

E44 70th ST over Prairie Creek

Good

Benton County, Iowa · 083121401 · Structure no. 000000000071431

Built
2018
7 years old
Condition
Good
inspected April 2022
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
481
2022 count
Owner
County
County Highway Agency

About this bridge

E44 70th ST over Prairie Creek is a concrete continuous slab carrying E44 70th ST over Prairie Creek in Benton County, Iowa. It was built in 2018, so it is 7 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 481 vehicles a day, roughly 15% of them trucks, projected to reach 481 by 2043. The structure is 90 ft (27.4 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesE44 70th ST
CrossesPrairie Creek
Location083121401
RouteCounty Highway 0
CountyBenton County
StateIowa
Coordinates42.00773, -92.21339
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 inspectionApril 2022
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 alignment8: Equal to present desirable 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 length90 ft (27.4 m)
Longest span35 ft (10.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic481 (2022)
Projected traffic481 by 2043
Trucks15%
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 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 E44 70th ST over Prairie Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is E44 70th ST over Prairie 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 April 2022.

How much traffic does E44 70th ST over Prairie Creek carry?

About 481 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is E44 70th ST over Prairie Creek?

The structure is 90 ft (27.4 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns E44 70th ST over Prairie Creek?

It is owned by the County Highway Agency.