US Bridges

Loc 350th ST over Black Cat Creek

Fair

Kossuth County, Iowa · 098303101 · Structure no. 000000000216761

Built
1978
47 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
76 ft
3 main spans
Daily traffic
35
2021 count
Owner
County
County Highway Agency

About this bridge

Loc 350th ST over Black Cat Creek is a concrete continuous slab carrying Loc 350th ST over Black Cat Creek in Kossuth County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 35 vehicles a day, projected to reach 35 by 2043. The structure is 76 ft (23.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLoc 350th ST
CrossesBlack Cat Creek
Location098303101
RouteCounty Highway 0
CountyKossuth County
StateIowa
Coordinates43.26942, -94.43509
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.8 US tons
Inventory rating24.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length76 ft (23.3 m)
Longest span29 ft (8.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2021)
Projected traffic35 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 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 Loc 350th ST over Black Cat Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Loc 350th ST over Black Cat Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Loc 350th ST over Black Cat Creek carry?

About 35 vehicles per day (2021 count).

How long is Loc 350th ST over Black Cat Creek?

The structure is 76 ft (23.3 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns Loc 350th ST over Black Cat Creek?

It is owned by the County Highway Agency.