US Bridges

220th Street over Kemp Creek

PoorClosed to traffic

Adams County, Iowa · 071350103 · Structure no. 000000000059190

Built
1910
115 years old
Condition
Poor
inspected December 2020
Type
Truss - Thru
Steel
Length
119 ft
1 main span
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

220th Street over Kemp Creek is a steel truss - thru carrying 220th Street over Kemp Creek in Adams County, Iowa. It was built in 1910, so it is 115 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 20 vehicles a day, projected to reach 20 by 2043. The structure is 119 ft (36.3 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries220th Street
CrossesKemp Creek
Location071350103
RouteCounty Highway 0
CountyAdams County
StateIowa
Coordinates40.98653, -94.81781
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2020
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length119 ft (36.3 m)
Longest span60 ft (18.3 m)
Deck width15 ft (4.5 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 220th Street over Kemp Creek built?

It was built in 1910, making it 115 years old in 2025.

What condition is 220th Street over Kemp Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2020.

How much traffic does 220th Street over Kemp Creek carry?

About 20 vehicles per day (2022 count).

How long is 220th Street over Kemp Creek?

The structure is 119 ft (36.3 m) long with a longest span of 60 ft (18.3 m) and a deck 15 ft wide.

Who owns 220th Street over Kemp Creek?

It is owned by the County Highway Agency.