US Bridges

US 231 over Iroquois River

Good

Jasper County, Indiana · 01.33 S SR 14 · Structure no. 029491

Built
2018
7 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
131 ft
3 main spans
Daily traffic
4,930
2011 count
Owner
State
State Highway Agency

About this bridge

US 231 over Iroquois River is a concrete continuous box beam or girders - single or spread carrying US 231 over Iroquois River in Jasper County, Indiana. It was built in 2018, so it is 7 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,930 vehicles a day, roughly 7% of them trucks, projected to reach 5,810 by 2037. The structure is 131 ft (40 m) long and 40 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesUS 231
CrossesIroquois River
Location01.33 S SR 14
RouteU.S. Route 231
CountyJasper County
StateIndiana
Coordinates41.0077, -87.15148
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length131 ft (40 m)
Longest span47 ft (14.4 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,930 (2011)
Projected traffic5,810 by 2037
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 231 over Iroquois River built?

It was built in 2018, making it 7 years old in 2025.

What condition is US 231 over Iroquois River 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 US 231 over Iroquois River carry?

About 4,930 vehicles per day (2011 count), of which roughly 7% are trucks.

How long is US 231 over Iroquois River?

The structure is 131 ft (40 m) long with a longest span of 47 ft (14.4 m) and a deck 40 ft wide.

Who owns US 231 over Iroquois River?

It is owned by the State Highway Agency.