US Bridges

US 34 EB over X-31 & Long Creek

Good

Des Moines County, Iowa · 6.4 Mi. E of SR X30 · Structure no. 000000000607665

Built
2005
20 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
500 ft
5 main spans
Daily traffic
3,550
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 EB over X-31 & Long Creek is a prestressed concrete stringer/multi-beam or girder carrying US 34 EB over X-31 & Long Creek in Des Moines County, Iowa. It was built in 2005, so it is 20 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 3,550 vehicles a day, roughly 14% of them trucks, projected to reach 3,550 by 2044. The structure is 500 ft (152.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 EB
CrossesX-31 & Long Creek
Location6.4 Mi. E of SR X30
RouteU.S. Route 34
StateIowa
Coordinates40.83457, -91.31511
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span116 ft (35.4 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,550 (2022)
Projected traffic3,550 by 2044
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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 EB over X-31 & Long Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is US 34 EB over X-31 & Long 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 November 2024.

How much traffic does US 34 EB over X-31 & Long Creek carry?

About 3,550 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US 34 EB over X-31 & Long Creek?

The structure is 500 ft (152.4 m) long with a longest span of 116 ft (35.4 m) and a deck 43 ft wide.

Who owns US 34 EB over X-31 & Long Creek?

It is owned by the State Highway Agency.