US Bridges

Main Street over Mill Raceway

Good

St. Joseph County, Indiana · 00.20 N SR 933 · Structure no. 7100123

Built
1994
31 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
24,491
2019 count
Owner
County
County Highway Agency

About this bridge

Main Street over Mill Raceway is a concrete culvert carrying Main Street over Mill Raceway in St. Joseph County, Indiana. It was built in 1994, so it is 31 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24,491 vehicles a day, roughly 2% of them trucks, projected to reach 29,884 by 2039. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMain Street
CrossesMill Raceway
Location00.20 N SR 933
RouteCity Street 0
StateIndiana
Coordinates41.66425, -86.1813
Functional classUrban Other Principal Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,491 (2019)
Projected traffic29,884 by 2039
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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$109,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over Mill Raceway built?

It was built in 1994, making it 31 years old in 2025.

What condition is Main Street over Mill Raceway 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 September 2024.

How much traffic does Main Street over Mill Raceway carry?

About 24,491 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Main Street over Mill Raceway?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6 m).

Who owns Main Street over Mill Raceway?

It is owned by the County Highway Agency.