US Bridges

Diller Rd. over Dug Run - Diller RD

Fair

Allen County, Ohio · 0.31 MI E of SR 309 · Structure no. 0232297

Built
1962
63 years old, rebuilt 2013
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
68 ft
3 main spans
Daily traffic
2,629
2015 count
Owner
County
County Highway Agency

About this bridge

Diller Rd. over Dug Run - Diller RD is a steel continuous stringer/multi-beam or girder carrying Diller Rd. over Dug Run - Diller RD in Allen County, Ohio. It was built in 1962 and reconstructed in 2013, so it is 63 years old, older than the Ohio average of 47.3 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 2,629 vehicles a day, roughly 1% of them trucks, projected to reach 3,649 by 2035. The structure is 68 ft (20.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDiller Rd.
CrossesDug Run - Diller RD
Location0.31 MI E of SR 309
RouteCounty Highway T0105
CountyAllen County
StateOhio
Coordinates40.78017, -84.17922
Functional classUrban Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.5 US tons
Inventory rating63.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length68 ft (20.6 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,629 (2015)
Projected traffic3,649 by 2035
Trucks1%
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 Diller Rd. over Dug Run - Diller RD built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2013.

What condition is Diller Rd. over Dug Run - Diller RD 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 Diller Rd. over Dug Run - Diller RD carry?

About 2,629 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Diller Rd. over Dug Run - Diller RD?

The structure is 68 ft (20.6 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Diller Rd. over Dug Run - Diller RD?

It is owned by the County Highway Agency.