US Bridges

US 34 WB over Big Cedar Creek

Good

Jefferson County, Iowa · 1.6 MI W of Jct. SR V-63 · Structure no. 000000000608820

Built
2006
19 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
208 ft
3 main spans
Daily traffic
3,900
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 WB over Big Cedar Creek is a prestressed concrete stringer/multi-beam or girder carrying US 34 WB over Big Cedar Creek in Jefferson County, Iowa. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,900 vehicles a day, roughly 19% of them trucks, projected to reach 3,900 by 2042. The structure is 208 ft (63.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 WB
CrossesBig Cedar Creek
Location1.6 MI W of Jct. SR V-63
RouteU.S. Route 34
StateIowa
Coordinates41.00987, -92.1182
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.4 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length208 ft (63.4 m)
Longest span82 ft (25 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2022)
Projected traffic3,900 by 2042
Trucks19%
Lanes on structure2
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 Big Cedar Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is US 34 WB over Big Cedar 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 March 2023.

How much traffic does US 34 WB over Big Cedar Creek carry?

About 3,900 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is US 34 WB over Big Cedar Creek?

The structure is 208 ft (63.4 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.

Who owns US 34 WB over Big Cedar Creek?

It is owned by the State Highway Agency.