US Bridges

198th Lane over Kemp Creek

PoorClosed to traffic

Adams County, Iowa · 072342003 · Structure no. 000000000060020

Built
1900
125 years old, rebuilt 1967
Condition
Poor
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

198th Lane over Kemp Creek is a steel stringer/multi-beam or girder carrying 198th Lane over Kemp Creek in Adams County, Iowa. It was built in 1900 and reconstructed in 1967, 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 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 5 vehicles a day, projected to reach 5 by 2044. The structure is 62 ft (18.9 m) long and 16 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

Location

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Carries198th Lane
CrossesKemp Creek
Location072342003
RouteCounty Highway 0
CountyAdams County
StateIowa
Coordinates41.01911, -94.78077
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 inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span61 ft (18.6 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$728,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 198th Lane over Kemp Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1967.

What condition is 198th Lane 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 January 2024.

How much traffic does 198th Lane over Kemp Creek carry?

About 5 vehicles per day (2022 count).

How long is 198th Lane over Kemp Creek?

The structure is 62 ft (18.9 m) long with a longest span of 61 ft (18.6 m) and a deck 16 ft wide.

Who owns 198th Lane over Kemp Creek?

It is owned by the County Highway Agency.