US Bridges

Johnson RD over US 31 Nb/Sb

Good

St. Joseph County, Indiana · 00.50 S US 20 · Structure no. 080428

Built
2016
9 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
199 ft
2 main spans
Daily traffic
1,823
2021 count
Owner
State
State Highway Agency

About this bridge

Johnson RD over US 31 Nb/Sb is a prestressed concrete continuous tee beam carrying Johnson RD over US 31 Nb/Sb in St. Joseph County, Indiana. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,823 vehicles a day, roughly 2% of them trucks, projected to reach 6,000 by 2035. The structure is 199 ft (60.6 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJohnson RD
CrossesUS 31 Nb/Sb
Location00.50 S US 20
RouteCity Street 0
CountySt. Joseph County
StateIndiana
Coordinates41.61662, -86.25232
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length199 ft (60.6 m)
Longest span98 ft (30 m)
Deck width44 ft (13.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,823 (2021)
Projected traffic6,000 by 2035
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Johnson RD over US 31 Nb/Sb built?

It was built in 2016, making it 9 years old in 2025.

What condition is Johnson RD over US 31 Nb/Sb 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 July 2023.

How much traffic does Johnson RD over US 31 Nb/Sb carry?

About 1,823 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Johnson RD over US 31 Nb/Sb?

The structure is 199 ft (60.6 m) long with a longest span of 98 ft (30 m) and a deck 44 ft wide.

Who owns Johnson RD over US 31 Nb/Sb?

It is owned by the State Highway Agency.