US Bridges

US 34 WB over Mitchell Creek

Fair

Jefferson County, Iowa · 3.6 Mi. W of Jct. Ia 1 · Structure no. 000000000609890

Built
2008
17 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
199 ft
3 main spans
Daily traffic
2,485
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 WB over Mitchell Creek is a prestressed concrete stringer/multi-beam or girder carrying US 34 WB over Mitchell Creek in Jefferson County, Iowa. It was built in 2008, so it is 17 years old, younger 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.

It carries about 2,485 vehicles a day, roughly 26% of them trucks, projected to reach 2,485 by 2044. The structure is 199 ft (60.7 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 WB
CrossesMitchell Creek
Location3.6 Mi. W of Jct. Ia 1
RouteU.S. Route 34
StateIowa
Coordinates41.00147, -92.01819
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating44.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length199 ft (60.7 m)
Longest span82 ft (25 m)
Deck width60 ft (18.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,485 (2022)
Projected traffic2,485 by 2044
Trucks26%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 34 WB over Mitchell Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is US 34 WB over Mitchell Creek 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 December 2024.

How much traffic does US 34 WB over Mitchell Creek carry?

About 2,485 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is US 34 WB over Mitchell Creek?

The structure is 199 ft (60.7 m) long with a longest span of 82 ft (25 m) and a deck 60 ft wide.

Who owns US 34 WB over Mitchell Creek?

It is owned by the State Highway Agency.