US Bridges

Main ST over Middle Raccoon River

FairPosted for load

Carroll County, Iowa · 082333400 · Structure no. 000000000002520

Built
1958
67 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
85
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Middle Raccoon River is a concrete continuous slab carrying Main ST over Middle Raccoon River in Carroll County, Iowa. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 85 vehicles a day, projected to reach 85 by 2043. The structure is 127 ft (38.7 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMain ST
CrossesMiddle Raccoon River
Location082333400
RouteCity Street 0
CountyCarroll County
StateIowa
Coordinates41.87088, -94.66965
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length127 ft (38.7 m)
Longest span49 ft (14.9 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2021)
Projected traffic85 by 2043
Trucks0%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Main ST over Middle Raccoon River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Main ST over Middle Raccoon River 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 May 2023.

How much traffic does Main ST over Middle Raccoon River carry?

About 85 vehicles per day (2021 count).

How long is Main ST over Middle Raccoon River?

The structure is 127 ft (38.7 m) long with a longest span of 49 ft (14.9 m) and a deck 22 ft wide.

Who owns Main ST over Middle Raccoon River?

It is owned by the City or Municipal Highway Agency.