US Bridges

Main ST over Cedar River

PoorPosted for load

Floyd County, Iowa · 095161205 · Structure no. 000000000001820

Built
1909
116 years old
Condition
Poor
inspected December 2024
Type
Arch - Deck
Concrete Continuous
Length
248 ft
3 main spans
Daily traffic
4,971
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Cedar River is a concrete continuous arch - deck carrying Main ST over Cedar River in Floyd County, Iowa. It was built in 1909, so it is 116 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. Its operating status is: posted for load restriction.

It carries about 4,971 vehicles a day, projected to reach 4,971 by 2044. The structure is 248 ft (75.6 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMain ST
CrossesCedar River
Location095161205
RouteCity Street 0
CountyFloyd County
StateIowa
Coordinates43.0658, -92.68022
Functional classUrban Minor Arterial

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20 US tons
Inventory rating15 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length248 ft (75.6 m)
Longest span80 ft (24.4 m)
Deck width72 ft (21.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,971 (2022)
Projected traffic4,971 by 2044
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Cedar River built?

It was built in 1909, making it 116 years old in 2025.

What condition is Main ST 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 December 2024.

How much traffic does Main ST over Cedar River carry?

About 4,971 vehicles per day (2022 count).

How long is Main ST over Cedar River?

The structure is 248 ft (75.6 m) long with a longest span of 80 ft (24.4 m) and a deck 72 ft wide.

Who owns Main ST over Cedar River?

It is owned by the City or Municipal Highway Agency.