US Bridges

US 30 over Greiger Ditch

Good

Porter County, Indiana · 2.56 W US 421 · Structure no. 080792

Built
2014
11 years old
Condition
Good
inspected March 2024
Type
Culvert
Steel
Length
23 ft
3 main spans
Daily traffic
17,516
2020 count
Owner
State
State Highway Agency

About this bridge

US 30 over Greiger Ditch is a steel culvert carrying US 30 over Greiger Ditch in Porter County, Indiana. It was built in 2014, so it is 11 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 17,516 vehicles a day, roughly 10% of them trucks, projected to reach 36,141 by 2030. The structure is 23 ft (7 m) long and 37 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesUS 30
CrossesGreiger Ditch
Location2.56 W US 421
RouteU.S. Route 30
CountyPorter County
StateIndiana
Coordinates41.43634, -86.93964
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length23 ft (7 m)
Longest span7 ft (2.1 m)
Deck width37 ft (11.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,516 (2020)
Projected traffic36,141 by 2030
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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 30 over Greiger Ditch built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 30 over Greiger Ditch 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 March 2024.

How much traffic does US 30 over Greiger Ditch carry?

About 17,516 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 30 over Greiger Ditch?

The structure is 23 ft (7 m) long with a longest span of 7 ft (2.1 m) and a deck 37 ft wide.

Who owns US 30 over Greiger Ditch?

It is owned by the State Highway Agency.