US Bridges

US 34 WB Off Ramp over Parking Lot

Fair

Des Moines County, Iowa · 0.2 Mi. W of Il St. Line · Structure no. 000000000604851

Built
1972
53 years old, rebuilt 1993
Condition
Fair
inspected October 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
502 ft
6 main spans
Daily traffic
770
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 WB Off Ramp over Parking Lot is a steel continuous girder and floorbeam system carrying US 34 WB Off Ramp over Parking Lot in Des Moines County, Iowa. It was built in 1972 and reconstructed in 1993, so it is 53 years old, older 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 770 vehicles a day, roughly 9% of them trucks, projected to reach 770 by 2044. The structure is 502 ft (153 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 WB Off Ramp
CrossesParking Lot
Location0.2 Mi. W of Il St. Line
RouteU.S. Route 34
StateIowa
Coordinates40.813, -91.09901
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.4 US tons
Inventory rating25.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length502 ft (153 m)
Longest span83 ft (25.3 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2022)
Projected traffic770 by 2044
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 34 WB Off Ramp over Parking Lot built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1993.

What condition is US 34 WB Off Ramp over Parking Lot 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 October 2024.

How much traffic does US 34 WB Off Ramp over Parking Lot carry?

About 770 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is US 34 WB Off Ramp over Parking Lot?

The structure is 502 ft (153 m) long with a longest span of 83 ft (25.3 m) and a deck 26 ft wide.

Who owns US 34 WB Off Ramp over Parking Lot?

It is owned by the State Highway Agency.