US Bridges

40th ST over Beaver Creek

Good

Howard County, Iowa · 100132803 · Structure no. 000000000183921

Built
2020
5 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

40th ST over Beaver Creek is a concrete continuous slab carrying 40th ST over Beaver Creek in Howard County, Iowa. It was built in 2020, so it is 5 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 73 vehicles a day, projected to reach 73 by 2044. The structure is 93 ft (28.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries40th ST
CrossesBeaver Creek
Location100132803
RouteCounty Highway 0
StateIowa
Coordinates43.45809, -92.3846
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 protection9 ExcellentNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length93 ft (28.4 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 traffic73 (2022)
Projected traffic73 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 40th ST over Beaver Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is 40th ST over Beaver 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 40th ST over Beaver Creek carry?

About 73 vehicles per day (2022 count).

How long is 40th ST over Beaver Creek?

The structure is 93 ft (28.4 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns 40th ST over Beaver Creek?

It is owned by the County Highway Agency.