US Bridges

P30 90th Ave over Calamus Creek

Good

Kossuth County, Iowa · 096290402 · Structure no. 000000000215291

Built
2015
10 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
111 ft
3 main spans
Daily traffic
339
2022 count
Owner
County
County Highway Agency

About this bridge

P30 90th Ave over Calamus Creek is a concrete continuous slab carrying P30 90th Ave over Calamus Creek in Kossuth County, Iowa. It was built in 2015, so it is 10 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 339 vehicles a day, roughly 19% of them trucks, projected to reach 339 by 2043. The structure is 111 ft (33.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesP30 90th Ave
CrossesCalamus Creek
Location096290402
RouteCounty Highway 0
StateIowa
Coordinates43.16304, -94.28596
Functional classRural Minor 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 inspectionMay 2023
Inspection intervalevery 48 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length111 ft (33.7 m)
Longest span43 ft (13.1 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic339 (2022)
Projected traffic339 by 2043
Trucks19%
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 P30 90th Ave over Calamus Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is P30 90th Ave over Calamus 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 May 2023.

How much traffic does P30 90th Ave over Calamus Creek carry?

About 339 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is P30 90th Ave over Calamus Creek?

The structure is 111 ft (33.7 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.

Who owns P30 90th Ave over Calamus Creek?

It is owned by the County Highway Agency.