US Bridges

Quinn RD over Branch of Potato Creek

Fair

St. Joseph County, Indiana · 00.20 E of Tamarack RD · Structure no. 7100066

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
249
2021 count
Owner
County
County Highway Agency

About this bridge

Quinn RD over Branch of Potato Creek is a steel culvert carrying Quinn RD over Branch of Potato Creek in St. Joseph County, Indiana. It was built in 1940, so it is 85 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 249 vehicles a day, roughly 12% of them trucks, projected to reach 304 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesQuinn RD
CrossesBranch of Potato Creek
Location00.20 E of Tamarack RD
RouteCounty Highway 0
CountySt. Joseph County
StateIndiana
Coordinates41.5202, -86.42291
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating29.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic249 (2021)
Projected traffic304 by 2041
Trucks12%
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$54,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Quinn RD over Branch of Potato Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Quinn RD over Branch of Potato Creek 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 Quinn RD over Branch of Potato Creek carry?

About 249 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is Quinn RD over Branch of Potato Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns Quinn RD over Branch of Potato Creek?

It is owned by the County Highway Agency.