US Bridges

FM over Beaver Creek

Poor

Grundy County, Iowa · 089172201 · Structure no. 000000000165990

Built
1973
52 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
501
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Beaver Creek in Grundy County, Iowa. It was built in 1973, so it is 52 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 4 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.

It carries about 501 vehicles a day, roughly 15% of them trucks, projected to reach 501 by 2044. The structure is 180 ft (54.9 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesBeaver Creek
Location089172201
RouteCounty Highway 0
StateIowa
Coordinates42.51384, -92.84661
Functional classRural Major Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length180 ft (54.9 m)
Longest span64 ft (19.5 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2022)
Projected traffic501 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 FM over Beaver Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is FM over Beaver 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 April 2024.

How much traffic does FM over Beaver Creek carry?

About 501 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is FM over Beaver Creek?

The structure is 180 ft (54.9 m) long with a longest span of 64 ft (19.5 m) and a deck 32 ft wide.

Who owns FM over Beaver Creek?

It is owned by the County Highway Agency.