US Bridges

SR 18 over Greenlee Ditch

Good

Blackford County, Indiana · 00.76 W SR 3 · Structure no. 076816

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
50 ft
1 main span
Daily traffic
2,781
2020 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Greenlee Ditch is a concrete culvert carrying SR 18 over Greenlee Ditch in Blackford County, Indiana. It was built in 2008, so it is 17 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,781 vehicles a day, roughly 32% of them trucks, projected to reach 4,830 by 2032. The structure is 50 ft (15.2 m) long and 50 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesSR 18
CrossesGreenlee Ditch
Location00.76 W SR 3
RouteState Highway 18
CountyBlackford County
StateIndiana
Coordinates40.55219, -85.38539
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating95 US tons
Inventory rating72.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span20 ft (6 m)
Deck width50 ft (15.2 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,781 (2020)
Projected traffic4,830 by 2032
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 over Greenlee Ditch built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR 18 over Greenlee Ditch 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 May 2023.

How much traffic does SR 18 over Greenlee Ditch carry?

About 2,781 vehicles per day (2020 count), of which roughly 32% are trucks.

How long is SR 18 over Greenlee Ditch?

The structure is 50 ft (15.2 m) long with a longest span of 20 ft (6 m) and a deck 50 ft wide.

Who owns SR 18 over Greenlee Ditch?

It is owned by the State Highway Agency.