US Bridges

Winslow RD over Trib W Fork Cedar River

Poor

Black Hawk County, Iowa · 90-14-08-03-10 · Structure no. 000000000076780

Built
1966
59 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete Continuous
Length
30 ft
1 main span
Daily traffic
255
2022 count
Owner
County
County Highway Agency

About this bridge

Winslow RD over Trib W Fork Cedar River is a concrete continuous slab carrying Winslow RD over Trib W Fork Cedar River in Black Hawk 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 255 vehicles a day, roughly 7% of them trucks, projected to reach 255 by 2044. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWinslow RD
CrossesTrib W Fork Cedar River
Location90-14-08-03-10
RouteCounty Highway 0
StateIowa
Coordinates42.62848, -92.52932
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2022)
Projected traffic255 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Winslow RD over Trib W Fork Cedar River built?

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

What condition is Winslow RD over Trib W Fork 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 November 2024.

How much traffic does Winslow RD over Trib W Fork Cedar River carry?

About 255 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Winslow RD over Trib W Fork Cedar River?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns Winslow RD over Trib W Fork Cedar River?

It is owned by the County Highway Agency.