US Bridges

263rd ST over Ia 163

Good

Mahaska County, Iowa · 1.7 Mi. E of Jct. Ia 92 · Structure no. 000000000606700

Built
1995
30 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
339 ft
4 main spans
Daily traffic
300
2022 count
Owner
State
State Highway Agency

About this bridge

263rd ST over Ia 163 is a prestressed concrete stringer/multi-beam or girder carrying 263rd ST over Ia 163 in Mahaska County, Iowa. It was built in 1995, so it is 30 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 300 vehicles a day, projected to reach 300 by 2042. The structure is 339 ft (103.3 m) long and 35 ft wide.

Location

Open in Google Maps
Carries263rd ST
CrossesIa 163
Location1.7 Mi. E of Jct. Ia 92
RouteCounty Highway 0
CountyMahaska County
StateIowa
Coordinates41.27441, -92.66248
Functional classUrban Local

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.7 US tons
Inventory rating39.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length339 ft (103.3 m)
Longest span112 ft (34.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic300 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 263rd ST over Ia 163 built?

It was built in 1995, making it 30 years old in 2025.

What condition is 263rd ST 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 April 2023.

How much traffic does 263rd ST over Ia 163 carry?

About 300 vehicles per day (2022 count).

How long is 263rd ST over Ia 163?

The structure is 339 ft (103.3 m) long with a longest span of 112 ft (34.1 m) and a deck 35 ft wide.

Who owns 263rd ST over Ia 163?

It is owned by the State Highway Agency.