US Bridges

210th ST over Small Stream

Good

Union County, Iowa · 072303101 · Structure no. 000000000325971

Built
2012
13 years old
Condition
Good
inspected October 2020
Type
Slab
Steel
Length
40 ft
2 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

210th ST over Small Stream is a steel slab carrying 210th ST over Small Stream in Union 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 26 vehicles a day, roughly 15% of them trucks, projected to reach 26 by 2043. The structure is 40 ft (12.2 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries210th ST
CrossesSmall Stream
Location072303101
RouteCounty Highway 0
CountyUnion County
StateIowa
Coordinates40.99939, -94.35697
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating50 US tons
Inventory rating36.3 US tons

Structure

Structure typeSlab
MaterialSteel
DeckOther
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 210th ST over Small Stream built?

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

What condition is 210th 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 October 2020.

How much traffic does 210th ST over Small Stream carry?

About 26 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 210th ST over Small Stream?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns 210th ST over Small Stream?

It is owned by the County Highway Agency.