US Bridges

SR G28 over Ia 163

Good

Marion County, Iowa · At JCT SR G28/WASH. St. · Structure no. 000000000601455

Built
1994
31 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
271 ft
2 main spans
Daily traffic
10,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR G28 over Ia 163 is a steel continuous stringer/multi-beam or girder carrying SR G28 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 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 10,500 vehicles a day, roughly 2% of them trucks, projected to reach 10,500 by 2043. The structure is 271 ft (82.6 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesSR G28
CrossesIa 163
LocationAt JCT SR G28/WASH. St.
RouteCity Street 0
CountyMarion County
StateIowa
Coordinates41.41122, -92.94902
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length271 ft (82.6 m)
Longest span147 ft (44.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2022)
Projected traffic10,500 by 2043
Trucks2%
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 SR G28 over Ia 163 built?

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

What condition is SR G28 over Ia 163 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 July 2023.

How much traffic does SR G28 over Ia 163 carry?

About 10,500 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is SR G28 over Ia 163?

The structure is 271 ft (82.6 m) long with a longest span of 147 ft (44.8 m) and a deck 43 ft wide.

Who owns SR G28 over Ia 163?

It is owned by the State Highway Agency.