US Bridges

35th ST over Mill Creek

Good

Jackson County, Iowa · 084E31709 · Structure no. 000000000192331

Built
2019
6 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
236
2022 count
Owner
County
County Highway Agency

About this bridge

35th ST over Mill Creek is a concrete continuous slab carrying 35th ST over Mill Creek in Jackson County, Iowa. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 236 vehicles a day, roughly 11% of them trucks, projected to reach 236 by 2044. The structure is 150 ft (45.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries35th ST
CrossesMill Creek
Location084E31709
RouteCounty Highway 0
StateIowa
Coordinates42.07939, -90.63581
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length150 ft (45.7 m)
Longest span59 ft (18 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2022)
Projected traffic236 by 2044
Trucks11%
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 35th ST over Mill Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is 35th ST over Mill Creek 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 February 2024.

How much traffic does 35th ST over Mill Creek carry?

About 236 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is 35th ST over Mill Creek?

The structure is 150 ft (45.7 m) long with a longest span of 59 ft (18 m) and a deck 33 ft wide.

Who owns 35th ST over Mill Creek?

It is owned by the County Highway Agency.