US Bridges

Riley RD over Bunch Ditch

Fair

St. Joseph County, Indiana · 00.50 W of Ironwood RD · Structure no. 7100071

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
42 ft
3 main spans
Daily traffic
163
2021 count
Owner
County
County Highway Agency

About this bridge

Riley RD over Bunch Ditch is a wood or timber slab carrying Riley RD over Bunch Ditch in St. Joseph County, Indiana. It was built in 1990, so it is 35 years old, younger 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 163 vehicles a day, roughly 14% of them trucks, projected to reach 199 by 2041. The structure is 42 ft (12.8 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiley RD
CrossesBunch Ditch
Location00.50 W of Ironwood RD
RouteCounty Highway 0
CountySt. Joseph County
StateIndiana
Coordinates41.50786, -86.22405
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 rating60.7 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span18 ft (5.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic163 (2021)
Projected traffic199 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$39,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Riley RD over Bunch Ditch built?

It was built in 1990, making it 35 years old in 2025.

What condition is Riley RD over Bunch 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 September 2024.

How much traffic does Riley RD over Bunch Ditch carry?

About 163 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Riley RD over Bunch Ditch?

The structure is 42 ft (12.8 m) long with a longest span of 18 ft (5.4 m) and a deck 25 ft wide.

Who owns Riley RD over Bunch Ditch?

It is owned by the County Highway Agency.