US Bridges

Mulberry Lane over Stream

Fair

Pottawattamie County, Iowa · 076422106 · Structure no. 000000000364355

Built
2001
24 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
27
2022 count
Owner
County
County Highway Agency

About this bridge

Mulberry Lane over Stream is a steel stringer/multi-beam or girder carrying Mulberry Lane over Stream in Pottawattamie County, Iowa. It was built in 2001, so it is 24 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 27 vehicles a day, projected to reach 27 by 2043. The structure is 61 ft (18.6 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMulberry Lane
CrossesStream
Location076422106
RouteCity Street 0
CountyPottawattamie County
StateIowa
Coordinates41.37392, -95.67986
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.4 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width23 ft (7.1 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2022)
Projected traffic27 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Mulberry Lane over Stream built?

It was built in 2001, making it 24 years old in 2025.

What condition is Mulberry Lane 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 Mulberry Lane over Stream carry?

About 27 vehicles per day (2022 count).

How long is Mulberry Lane over Stream?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 23 ft wide.

Who owns Mulberry Lane over Stream?

It is owned by the County Highway Agency.