US Bridges

60th Ave SW over Stream

Fair

Linn County, Iowa · 000000000 · Structure no. 000000000001191

Built
1991
34 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
6,447
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

60th Ave SW over Stream is a concrete continuous culvert carrying 60th Ave SW over Stream in Linn County, Iowa. It was built in 1991, so it is 34 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 6,447 vehicles a day, projected to reach 6,447 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries60th Ave SW
CrossesStream
Location000000000
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates41.91981, -91.67887
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,447 (2021)
Projected traffic6,447 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 60th Ave SW over Stream built?

It was built in 1991, making it 34 years old in 2025.

What condition is 60th Ave SW 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 2023.

How much traffic does 60th Ave SW over Stream carry?

About 6,447 vehicles per day (2021 count).

How long is 60th Ave SW over Stream?

The structure is 26 ft (7.9 m) long with a longest span of 13 ft (4 m).

Who owns 60th Ave SW over Stream?

It is owned by the City or Municipal Highway Agency.