US Bridges

Loc 30th Ave over Black Cat Creek

Good

Kossuth County, Iowa · 097300902 · Structure no. 000000000216101

Built
2009
16 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
30
2021 count
Owner
County
County Highway Agency

About this bridge

Loc 30th Ave over Black Cat Creek is a concrete continuous slab carrying Loc 30th Ave over Black Cat Creek in Kossuth County, Iowa. It was built in 2009, so it is 16 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, projected to reach 30 by 2043. The structure is 80 ft (24.5 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLoc 30th Ave
CrossesBlack Cat Creek
Location097300902
RouteCounty Highway 0
StateIowa
Coordinates43.2408, -94.40279
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length80 ft (24.5 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2021)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc 30th Ave over Black Cat Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Loc 30th Ave over Black Cat 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 Loc 30th Ave over Black Cat Creek carry?

About 30 vehicles per day (2021 count).

How long is Loc 30th Ave over Black Cat Creek?

The structure is 80 ft (24.5 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns Loc 30th Ave over Black Cat Creek?

It is owned by the County Highway Agency.