US Bridges

Loc 20th Ave over South Creek

Fair

Kossuth County, Iowa · 100301702 · Structure no. 000000000217780

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
112
2021 count
Owner
County
County Highway Agency

About this bridge

Loc 20th Ave over South Creek is a steel stringer/multi-beam or girder carrying Loc 20th Ave over South Creek in Kossuth County, Iowa. It was built in 1965, so it is 60 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 112 vehicles a day, roughly 24% of them trucks, projected to reach 112 by 2043. The structure is 44 ft (13.4 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLoc 20th Ave
CrossesSouth Creek
Location100301702
RouteCounty Highway 0
CountyKossuth County
StateIowa
Coordinates43.47601, -94.42415
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating29.5 US tons
Inventory rating16.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2021)
Projected traffic112 by 2043
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Loc 20th Ave over South Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Loc 20th Ave over South 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 20th Ave over South Creek carry?

About 112 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is Loc 20th Ave over South Creek?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 26 ft wide.

Who owns Loc 20th Ave over South Creek?

It is owned by the County Highway Agency.