US Bridges

US 35 over Robbins Ditch

Fair

Starke County, Indiana · 00.21 N US 30 · Structure no. 011370

Built
1958
67 years old, rebuilt 1990
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
3,430
2022 count
Owner
State
State Highway Agency

About this bridge

US 35 over Robbins Ditch is a prestressed concrete continuous box beam or girders - single or spread carrying US 35 over Robbins Ditch in Starke County, Indiana. It was built in 1958 and reconstructed in 1990, so it is 67 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 5 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 3,430 vehicles a day, roughly 23% of them trucks, projected to reach 4,095 by 2030. The structure is 120 ft (36.5 m) long and 112 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesUS 35
CrossesRobbins Ditch
Location00.21 N US 30
RouteU.S. Route 35
CountyStarke County
StateIndiana
Coordinates41.39708, -86.62085
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.5 m)
Longest span39 ft (11.8 m)
Deck width112 ft (34.2 m)
Roadway width109 ft (33.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,430 (2022)
Projected traffic4,095 by 2030
Trucks23%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 35 over Robbins Ditch built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1990.

What condition is US 35 over Robbins 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 February 2023.

How much traffic does US 35 over Robbins Ditch carry?

About 3,430 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is US 35 over Robbins Ditch?

The structure is 120 ft (36.5 m) long with a longest span of 39 ft (11.8 m) and a deck 112 ft wide.

Who owns US 35 over Robbins Ditch?

It is owned by the State Highway Agency.