US Bridges

Ia 117 over Ia 163

Good

Jasper County, Iowa · At Jct. Ia 163 · Structure no. 000000000601985

Built
1997
28 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
271 ft
3 main spans
Daily traffic
1,160
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 117 over Ia 163 is a prestressed concrete stringer/multi-beam or girder carrying Ia 117 over Ia 163 in Jasper County, Iowa. It was built in 1997, so it is 28 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 1,160 vehicles a day, roughly 6% of them trucks, projected to reach 1,160 by 2043. The structure is 271 ft (82.6 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIa 117
CrossesIa 163
LocationAt Jct. Ia 163
RouteState Highway 117
StateIowa
Coordinates41.59406, -93.25082
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating45.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length271 ft (82.6 m)
Longest span112 ft (34.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,160 (2022)
Projected traffic1,160 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 km)
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 Ia 117 over Ia 163 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Ia 117 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 January 2023.

How much traffic does Ia 117 over Ia 163 carry?

About 1,160 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Ia 117 over Ia 163?

The structure is 271 ft (82.6 m) long with a longest span of 112 ft (34.1 m) and a deck 39 ft wide.

Who owns Ia 117 over Ia 163?

It is owned by the State Highway Agency.