US Bridges

Bridge ST over Turkey River

FairPosted for load

Clayton County, Iowa · C25050530 · Structure no. 000000000020630

Built
1889
136 years old, rebuilt 1973
Condition
Fair
inspected November 2023
Type
Arch - Deck
Masonry
Length
189 ft
2 main spans
Daily traffic
4,755
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bridge ST over Turkey River is a masonry arch - deck carrying Bridge ST over Turkey River in Clayton County, Iowa. It was built in 1889 and reconstructed in 1973, so it is 136 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 6 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 4,755 vehicles a day, projected to reach 4,755 by 2043. The structure is 189 ft (57.6 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesBridge ST
CrossesTurkey River
LocationC25050530
RouteCity Street 0
CountyClayton County
StateIowa
Coordinates42.85479, -91.40403
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating5 US tons
Inventory rating5 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckOther
Main spans2
Design loadUnknown
Structure length189 ft (57.6 m)
Longest span80 ft (24.4 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,755 (2022)
Projected traffic4,755 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bridge ST over Turkey River built?

It was built in 1889, making it 136 years old in 2025. It was reconstructed in 1973.

What condition is Bridge ST over Turkey 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 November 2023.

How much traffic does Bridge ST over Turkey River carry?

About 4,755 vehicles per day (2022 count).

How long is Bridge ST over Turkey River?

The structure is 189 ft (57.6 m) long with a longest span of 80 ft (24.4 m) and a deck 35 ft wide.

Who owns Bridge ST over Turkey River?

It is owned by the City or Municipal Highway Agency.