US Bridges

Darling RD over Lengacher Drain

Fair

Allen County, Indiana · 00.07 E Thimler Road · Structure no. 0200093

Built
1995
30 years old
Condition
Fair
inspected May 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
146
2018 count
Owner
County
County Highway Agency

About this bridge

Darling RD over Lengacher Drain is a wood or timber slab carrying Darling RD over Lengacher Drain in Allen County, Indiana. It was built in 1995, so it is 30 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 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 146 vehicles a day, roughly 5% of them trucks, projected to reach 218 by 2038. The structure is 26 ft (7.9 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesDarling RD
CrossesLengacher Drain
Location00.07 E Thimler Road
RouteCounty Highway 260
StateIndiana
Coordinates41.17349, -84.93547
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.1 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (2018)
Projected traffic218 by 2038
Trucks5%
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 Darling RD over Lengacher Drain built?

It was built in 1995, making it 30 years old in 2025.

What condition is Darling RD over Lengacher Drain 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 May 2024.

How much traffic does Darling RD over Lengacher Drain carry?

About 146 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Darling RD over Lengacher Drain?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 33 ft wide.

Who owns Darling RD over Lengacher Drain?

It is owned by the County Highway Agency.