US Bridges

I-69 SB over Mississinewa River

Fair

Grant County, Indiana · 01.78 S US 35 · Structure no. 039630

Built
1963
62 years old, rebuilt 2022
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
396 ft
7 main spans
Daily traffic
14,139
2021 count
Owner
State
State Highway Agency

About this bridge

I-69 SB over Mississinewa River is a prestressed concrete continuous stringer/multi-beam or girder carrying I-69 SB over Mississinewa River in Grant County, Indiana. It was built in 1963 and reconstructed in 2022, 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 14,139 vehicles a day, roughly 40% of them trucks, projected to reach 23,224 by 2033. The structure is 396 ft (120.8 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-69 SB
CrossesMississinewa River
Location01.78 S US 35
RouteInterstate 69
StateIndiana
Coordinates40.45503, -85.54993
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating23.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length396 ft (120.8 m)
Longest span68 ft (20.7 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,139 (2021)
Projected traffic23,224 by 2033
Trucks40%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-69 SB over Mississinewa River built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2022.

What condition is I-69 SB over Mississinewa 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 October 2024.

How much traffic does I-69 SB over Mississinewa River carry?

About 14,139 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is I-69 SB over Mississinewa River?

The structure is 396 ft (120.8 m) long with a longest span of 68 ft (20.7 m) and a deck 44 ft wide.

Who owns I-69 SB over Mississinewa River?

It is owned by the State Highway Agency.