US Bridges

West 18th Road over Warner Ditch

Good

Marshall County, Indiana · 00.00 E of S Maple Road · Structure no. 5000119

Built
1994
31 years old
Condition
Good
inspected October 2024
Type
Slab
Wood or Timber
Length
51 ft
3 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

West 18th Road over Warner Ditch is a wood or timber slab carrying West 18th Road over Warner Ditch in Marshall County, Indiana. It was built in 1994, so it is 31 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 100 vehicles a day, roughly 8% of them trucks, projected to reach 150 by 2042. The structure is 51 ft (15.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWest 18th Road
CrossesWarner Ditch
Location00.00 E of S Maple Road
RouteCounty Highway 146
StateIndiana
Coordinates41.21608, -86.29022
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating53.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length51 ft (15.6 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic150 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 West 18th Road over Warner Ditch built?

It was built in 1994, making it 31 years old in 2025.

What condition is West 18th Road over Warner 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 October 2024.

How much traffic does West 18th Road over Warner Ditch carry?

About 100 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is West 18th Road over Warner Ditch?

The structure is 51 ft (15.6 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns West 18th Road over Warner Ditch?

It is owned by the County Highway Agency.