US Bridges

FM-183rd Street over Kemp Creek

Fair

Adams County, Iowa · 072341603 · Structure no. 000000000013370

Built
1933
92 years old, rebuilt 1959
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
153 ft
3 main spans
Daily traffic
368
2022 count
Owner
County
County Highway Agency

About this bridge

FM-183rd Street over Kemp Creek is a steel continuous stringer/multi-beam or girder carrying FM-183rd Street over Kemp Creek in Adams County, Iowa. It was built in 1933 and reconstructed in 1959, so it is 92 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 368 vehicles a day, roughly 15% of them trucks, projected to reach 368 by 2044. The structure is 153 ft (46.6 m) long and 36 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesFM-183rd Street
CrossesKemp Creek
Location072341603
RouteCounty Highway 0
StateIowa
Coordinates41.04024, -94.76398
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.1 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span58 ft (17.7 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic368 (2022)
Projected traffic368 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM-183rd Street over Kemp Creek built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1959.

What condition is FM-183rd Street over Kemp Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does FM-183rd Street over Kemp Creek carry?

About 368 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is FM-183rd Street over Kemp Creek?

The structure is 153 ft (46.6 m) long with a longest span of 58 ft (17.7 m) and a deck 36 ft wide.

Who owns FM-183rd Street over Kemp Creek?

It is owned by the County Highway Agency.