US Bridges

FM over Richland Creek

Good

Keokuk County, Iowa · 074102803 · Structure no. 000000000209571

Built
2007
18 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
118 ft
1 main span
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Richland Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Richland Creek in Keokuk County, Iowa. It was built in 2007, so it is 18 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 200 vehicles a day, projected to reach 200 by 2044. The structure is 118 ft (36 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesFM
CrossesRichland Creek
Location074102803
RouteCounty Highway 0
StateIowa
Coordinates41.18691, -92.02293
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal 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 rating48.6 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length118 ft (36 m)
Longest span115 ft (35.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic200 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Richland Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is FM over Richland Creek 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 March 2024.

How much traffic does FM over Richland Creek carry?

About 200 vehicles per day (2022 count).

How long is FM over Richland Creek?

The structure is 118 ft (36 m) long with a longest span of 115 ft (35.1 m) and a deck 27 ft wide.

Who owns FM over Richland Creek?

It is owned by the County Highway Agency.