US Bridges

E Ave NW over Stream

Good

Linn County, Iowa · 083073001 · Structure no. 000000000505725

Built
1900
125 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
3,610
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

E Ave NW over Stream is a concrete culvert carrying E Ave NW over Stream in Linn County, Iowa. It was built in 1900, so it is 125 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,610 vehicles a day, projected to reach 3,610 by 2042. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesE Ave NW
CrossesStream
Location083073001
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates41.97824, -91.71046
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 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 alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,610 (2022)
Projected traffic3,610 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was E Ave NW over Stream built?

It was built in 1900, making it 125 years old in 2025.

What condition is E Ave NW over Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does E Ave NW over Stream carry?

About 3,610 vehicles per day (2022 count).

How long is E Ave NW over Stream?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns E Ave NW over Stream?

It is owned by the City or Municipal Highway Agency.