US Bridges

North 7th ST over Small Stream

Good

Shelby County, Iowa · D81500610 · Structure no. 000000000502021

Built
2021
4 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
114
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

North 7th ST over Small Stream is a concrete continuous slab carrying North 7th ST over Small Stream in Shelby County, Iowa. It was built in 2021, so it is 4 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 114 vehicles a day, projected to reach 114 by 2044. The structure is 73 ft (22.3 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorth 7th ST
CrossesSmall Stream
LocationD81500610
RouteCity Street 0
CountyShelby County
StateIowa
Coordinates41.66647, -95.31906
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
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 rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span28 ft (8.5 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2022)
Projected traffic114 by 2044
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was North 7th ST over Small Stream built?

It was built in 2021, making it 4 years old in 2025.

What condition is North 7th ST over Small 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 December 2024.

How much traffic does North 7th ST over Small Stream carry?

About 114 vehicles per day (2022 count).

How long is North 7th ST over Small Stream?

The structure is 73 ft (22.3 m) long with a longest span of 28 ft (8.5 m) and a deck 27 ft wide.

Who owns North 7th ST over Small Stream?

It is owned by the City or Municipal Highway Agency.