US Bridges

Summit ST over Stream

Good

Marshall County, Iowa · 084182700 · Structure no. 000000000505185

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
54 ft
4 main spans
Daily traffic
2,348
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Summit ST over Stream is a concrete continuous culvert carrying Summit ST over Stream in Marshall County, Iowa. It was built in 2012, so it is 13 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,348 vehicles a day, projected to reach 2,348 by 2043. The structure is 54 ft (16.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSummit ST
CrossesStream
Location084182700
RouteCity Street 0
CountyMarshall County
StateIowa
Coordinates42.05274, -92.9332
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 spans4
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,348 (2022)
Projected traffic2,348 by 2043
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Summit ST over Stream built?

It was built in 2012, making it 13 years old in 2025.

What condition is Summit ST 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 July 2023.

How much traffic does Summit ST over Stream carry?

About 2,348 vehicles per day (2022 count).

How long is Summit ST over Stream?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m).

Who owns Summit ST over Stream?

It is owned by the City or Municipal Highway Agency.