US Bridges

55th ST over Pratt Creek

Good

Benton County, Iowa · 086113601 · Structure no. 000000000073481

Built
2023
2 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

55th ST over Pratt Creek is a concrete continuous slab carrying 55th ST over Pratt Creek in Benton County, Iowa. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 50 by 2044. The structure is 91 ft (27.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries55th ST
CrossesPratt Creek
Location086113601
RouteCounty Highway 0
CountyBenton County
StateIowa
Coordinates42.22505, -92.07721
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.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length91 ft (27.7 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 traffic50 (2022)
Projected traffic50 by 2044
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 55th ST over Pratt Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is 55th ST over Pratt 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 2024.

How much traffic does 55th ST over Pratt Creek carry?

About 50 vehicles per day (2022 count).

How long is 55th ST over Pratt Creek?

The structure is 91 ft (27.7 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns 55th ST over Pratt Creek?

It is owned by the County Highway Agency.