US Bridges

435th Street over Stream

Fair

Pottawattamie County, Iowa · 076391708 · Structure no. 000000000287601

Built
1995
30 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

435th Street over Stream is a steel stringer/multi-beam or girder carrying 435th Street over Stream in Pottawattamie County, Iowa. It was built in 1995, so it is 30 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 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 40 vehicles a day, projected to reach 40 by 2043. The structure is 100 ft (30.5 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries435th Street
CrossesStream
Location076391708
RouteCounty Highway 0
StateIowa
Coordinates41.37664, -95.35654
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29.4 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span58 ft (17.7 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic40 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 435th Street over Stream built?

It was built in 1995, making it 30 years old in 2025.

What condition is 435th Street over Stream 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 April 2024.

How much traffic does 435th Street over Stream carry?

About 40 vehicles per day (2022 count).

How long is 435th Street over Stream?

The structure is 100 ft (30.5 m) long with a longest span of 58 ft (17.7 m) and a deck 18 ft wide.

Who owns 435th Street over Stream?

It is owned by the County Highway Agency.