US Bridges

Local - 570th over Waterway

Fair

Cass County, Iowa · 075373402 · Structure no. 000000000098921

Built
1988
37 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

Local - 570th over Waterway is a prestressed concrete tee beam carrying Local - 570th over Waterway in Cass County, Iowa. It was built in 1988, so it is 37 years old, younger 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 6 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 15 vehicles a day, projected to reach 15 by 2044. The structure is 60 ft (18.3 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal - 570th
CrossesWaterway
Location075373402
RouteCounty Highway 0
CountyCass County
StateIowa
Coordinates41.24816, -95.09868
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2044
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local - 570th over Waterway built?

It was built in 1988, making it 37 years old in 2025.

What condition is Local - 570th over Waterway 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 March 2024.

How much traffic does Local - 570th over Waterway carry?

About 15 vehicles per day (2022 count).

How long is Local - 570th over Waterway?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 25 ft wide.

Who owns Local - 570th over Waterway?

It is owned by the County Highway Agency.