US Bridges

I-65 SB & NW Ramp over Main Beaver Dam Ditch

Fair

Lake County, Indiana · 02.16 N US 231 N JCT · Structure no. 038520

Built
1966
59 years old, rebuilt 2009
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
92 ft
3 main spans
Daily traffic
27,043
2015 count
Owner
State
State Highway Agency

About this bridge

I-65 SB & NW Ramp over Main Beaver Dam Ditch is a concrete continuous slab carrying I-65 SB & NW Ramp over Main Beaver Dam Ditch in Lake County, Indiana. It was built in 1966 and reconstructed in 2009, so it is 59 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 27,043 vehicles a day, roughly 28% of them trucks, projected to reach 28,982 by 2035. The structure is 92 ft (27.9 m) long and 97 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-65 SB & NW Ramp
CrossesMain Beaver Dam Ditch
Location02.16 N US 231 N JCT
RouteInterstate 65
CountyLake County
StateIndiana
Coordinates41.42453, -87.32161
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length92 ft (27.9 m)
Longest span36 ft (10.9 m)
Deck width97 ft (29.6 m)
Roadway width94 ft (28.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,043 (2015)
Projected traffic28,982 by 2035
Trucks28%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-65 SB & NW Ramp over Main Beaver Dam Ditch built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2009.

What condition is I-65 SB & NW Ramp over Main Beaver Dam Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does I-65 SB & NW Ramp over Main Beaver Dam Ditch carry?

About 27,043 vehicles per day (2015 count), of which roughly 28% are trucks.

How long is I-65 SB & NW Ramp over Main Beaver Dam Ditch?

The structure is 92 ft (27.9 m) long with a longest span of 36 ft (10.9 m) and a deck 97 ft wide.

Who owns I-65 SB & NW Ramp over Main Beaver Dam Ditch?

It is owned by the State Highway Agency.