US Bridges

SR 18 WB over Tippey Ditch

Fair

Grant County, Indiana · 00.20 E I-69 · Structure no. 004860

Built
1993
32 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
2,715
2016 count
Owner
State
State Highway Agency

About this bridge

SR 18 WB over Tippey Ditch is a concrete continuous slab carrying SR 18 WB over Tippey Ditch in Grant County, Indiana. It was built in 1993, so it is 32 years old, younger 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 2,715 vehicles a day, roughly 12% of them trucks, projected to reach 4,027 by 2030. The structure is 79 ft (24 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 18 WB
CrossesTippey Ditch
Location00.20 E I-69
RouteState Highway 18
CountyGrant County
StateIndiana
Coordinates40.55354, -85.54688
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24 m)
Longest span29 ft (8.8 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,715 (2016)
Projected traffic4,027 by 2030
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 18 WB over Tippey Ditch built?

It was built in 1993, making it 32 years old in 2025.

What condition is SR 18 WB over Tippey Ditch 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 August 2023.

How much traffic does SR 18 WB over Tippey Ditch carry?

About 2,715 vehicles per day (2016 count), of which roughly 12% are trucks.

How long is SR 18 WB over Tippey Ditch?

The structure is 79 ft (24 m) long with a longest span of 29 ft (8.8 m) and a deck 44 ft wide.

Who owns SR 18 WB over Tippey Ditch?

It is owned by the State Highway Agency.