US Bridges

150th ST over Stream

PoorClosed to traffic

Winneshiek County, Iowa · 096090805 · Structure no. 000000000346320

Built
1892
133 years old
Condition
Poor
inspected March 2013
Type
Truss - Thru
Steel
Length
183 ft
1 main span
Daily traffic
69
2022 count
Owner
County
County Highway Agency

About this bridge

150th ST over Stream is a steel truss - thru carrying 150th ST over Stream in Winneshiek County, Iowa. It was built in 1892, so it is 133 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 69 vehicles a day, roughly 22% of them trucks, projected to reach 69 by 2043. The structure is 183 ft (55.8 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries150th ST
CrossesStream
Location096090805
RouteCounty Highway 0
StateIowa
Coordinates43.15325, -91.92898
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2013
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+3 approach)
Design loadUnknown
Structure length183 ft (55.8 m)
Longest span132 ft (40.2 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deck11 ft (3.4 m)

Traffic and service

Average daily traffic69 (2022)
Projected traffic69 by 2043
Trucks22%
Lanes on structure1
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 statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 150th ST over Stream built?

It was built in 1892, making it 133 years old in 2025.

What condition is 150th ST over Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2013.

How much traffic does 150th ST over Stream carry?

About 69 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is 150th ST over Stream?

The structure is 183 ft (55.8 m) long with a longest span of 132 ft (40.2 m) and a deck 16 ft wide.

Who owns 150th ST over Stream?

It is owned by the County Highway Agency.