US Bridges

FM over Cedar River

Poor

Muscatine County, Iowa · 078033601 · Structure no. 000000000258340

Built
1966
59 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,054 ft
8 main spans
Daily traffic
990
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Cedar River is a steel continuous stringer/multi-beam or girder carrying FM over Cedar River in Muscatine County, Iowa. It was built in 1966, so it is 59 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 990 vehicles a day, roughly 11% of them trucks, projected to reach 990 by 2044. The structure is 1,054 ft (321.3 m) long and 33 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesFM
CrossesCedar River
Location078033601
RouteCounty Highway 0
StateIowa
Coordinates41.51963, -91.15142
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.4 US tons
Inventory rating33.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length1,054 ft (321.3 m)
Longest span139 ft (42.4 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic990 (2022)
Projected traffic990 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Cedar River built?

It was built in 1966, making it 59 years old in 2025.

What condition is FM over Cedar River 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 September 2024.

How much traffic does FM over Cedar River carry?

About 990 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is FM over Cedar River?

The structure is 1,054 ft (321.3 m) long with a longest span of 139 ft (42.4 m) and a deck 33 ft wide.

Who owns FM over Cedar River?

It is owned by the County Highway Agency.