US Bridges

SR 101 over ST Marys River

Fair

Adams County, Indiana · 00.06 N US 33 · Structure no. 025130

Built
1963
62 years old, rebuilt 1992
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
281 ft
3 main spans
Daily traffic
1,099
2019 count
Owner
State
State Highway Agency

About this bridge

SR 101 over ST Marys River is a steel continuous stringer/multi-beam or girder carrying SR 101 over ST Marys River in Adams County, Indiana. It was built in 1963 and reconstructed in 1992, so it is 62 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 1,099 vehicles a day, roughly 13% of them trucks, projected to reach 1,687 by 2032. The structure is 281 ft (85.6 m) long and 36 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR 101
CrossesST Marys River
Location00.06 N US 33
RouteState Highway 101
CountyAdams County
StateIndiana
Coordinates40.77941, -84.84232
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span84 ft (25.6 m)
Deck width36 ft (10.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,099 (2019)
Projected traffic1,687 by 2032
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 101 over ST Marys River built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1992.

What condition is SR 101 over ST Marys River 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 March 2024.

How much traffic does SR 101 over ST Marys River carry?

About 1,099 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is SR 101 over ST Marys River?

The structure is 281 ft (85.6 m) long with a longest span of 84 ft (25.6 m) and a deck 36 ft wide.

Who owns SR 101 over ST Marys River?

It is owned by the State Highway Agency.