US Bridges

US 34 EB over I 29

Good

Mills County, Iowa · US 34 over I-29 · Structure no. 000000000700115

Built
2014
11 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
347 ft
3 main spans
Daily traffic
4,700
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 EB over I 29 is a prestressed concrete stringer/multi-beam or girder carrying US 34 EB over I 29 in Mills County, Iowa. It was built in 2014, so it is 11 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 4,700 vehicles a day, roughly 11% of them trucks, projected to reach 4,700 by 2043. The structure is 347 ft (105.8 m) long and 53 ft wide.

CarriesUS 34 EB
CrossesI 29
LocationUS 34 over I-29
RouteU.S. Route 34
StateIowa
Coordinates41.04497, -95.82027
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length347 ft (105.8 m)
Longest span152 ft (46.3 m)
Deck width53 ft (16.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2022)
Projected traffic4,700 by 2043
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 34 EB over I 29 built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 34 EB over I 29 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 December 2023.

How much traffic does US 34 EB over I 29 carry?

About 4,700 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is US 34 EB over I 29?

The structure is 347 ft (105.8 m) long with a longest span of 152 ft (46.3 m) and a deck 53 ft wide.

Who owns US 34 EB over I 29?

It is owned by the State Highway Agency.