US Bridges

Clark ST over Ia 163

Fair

Marion County, Iowa · 2.5 Mi. E of SR G-28. · Structure no. 000000000601440

Built
1994
31 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
243 ft
2 main spans
Daily traffic
6,400
2022 count
Owner
State
State Highway Agency

About this bridge

Clark ST over Ia 163 is a steel continuous stringer/multi-beam or girder carrying Clark ST over Ia 163 in Marion County, Iowa. It was built in 1994, so it is 31 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 6,400 vehicles a day, roughly 6% of them trucks, projected to reach 6,400 by 2042. The structure is 243 ft (74.1 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesClark ST
CrossesIa 163
Location2.5 Mi. E of SR G-28.
RouteCity Street 0
CountyMarion County
StateIowa
Coordinates41.38888, -92.91356
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.7 US tons
Inventory rating38.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span120 ft (36.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2022)
Projected traffic6,400 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 Clark ST over Ia 163 built?

It was built in 1994, making it 31 years old in 2025.

What condition is Clark ST over Ia 163 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 May 2023.

How much traffic does Clark ST over Ia 163 carry?

About 6,400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Clark ST over Ia 163?

The structure is 243 ft (74.1 m) long with a longest span of 120 ft (36.6 m) and a deck 43 ft wide.

Who owns Clark ST over Ia 163?

It is owned by the State Highway Agency.