US Bridges

135th ST over S Br Turkey River

Good

Howard County, Iowa · 098121103 · Structure no. 000000000182211

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
49
2022 count
Owner
County
County Highway Agency

About this bridge

135th ST over S Br Turkey River is a concrete continuous slab carrying 135th ST over S Br Turkey River in Howard County, Iowa. It was built in 2023, so it is 2 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 49 vehicles a day, projected to reach 49 by 2043. The structure is 134 ft (40.9 m) long and 33 ft wide.

Location

Open in Google Maps
Carries135th ST
CrossesS Br Turkey River
Location098121103
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.32059, -92.2353
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length134 ft (40.9 m)
Longest span51 ft (15.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2022)
Projected traffic49 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$575 million
NavigationNo navigation control on waterway

Frequently asked questions

When was 135th ST over S Br Turkey River built?

It was built in 2023, making it 2 years old in 2025.

What condition is 135th ST over S Br Turkey River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does 135th ST over S Br Turkey River carry?

About 49 vehicles per day (2022 count).

How long is 135th ST over S Br Turkey River?

The structure is 134 ft (40.9 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.

Who owns 135th ST over S Br Turkey River?

It is owned by the County Highway Agency.