US Bridges

Adams Road over US 31 Nb/Sb

Fair

St. Joseph County, Indiana · 01.48 N I-90 · Structure no. 010224

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
259 ft
2 main spans
Daily traffic
612
2004 count
Owner
State
State Highway Agency

About this bridge

Adams Road over US 31 Nb/Sb is a steel continuous stringer/multi-beam or girder carrying Adams Road over US 31 Nb/Sb in St. Joseph County, Indiana. It was built in 1978, so it is 47 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 612 vehicles a day, roughly 10% of them trucks, projected to reach 948 by 2030. The structure is 259 ft (78.9 m) long and 39 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesAdams Road
CrossesUS 31 Nb/Sb
Location01.48 N I-90
RouteCounty Highway 0
CountySt. Joseph County
StateIndiana
Coordinates41.75169, -86.33497
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length259 ft (78.9 m)
Longest span127 ft (38.7 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic612 (2004)
Projected traffic948 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 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 Adams Road over US 31 Nb/Sb built?

It was built in 1978, making it 47 years old in 2025.

What condition is Adams Road over US 31 Nb/Sb 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 July 2023.

How much traffic does Adams Road over US 31 Nb/Sb carry?

About 612 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is Adams Road over US 31 Nb/Sb?

The structure is 259 ft (78.9 m) long with a longest span of 127 ft (38.7 m) and a deck 39 ft wide.

Who owns Adams Road over US 31 Nb/Sb?

It is owned by the State Highway Agency.