US Bridges

SR 1 over Deptmer Ditch

Good

Allen County, Indiana · 01.18 S I-469 · Structure no. 000400

Built
1984
41 years old, rebuilt 2016
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
72 ft
3 main spans
Daily traffic
11,561
2021 count
Owner
State
State Highway Agency

About this bridge

SR 1 over Deptmer Ditch is a concrete continuous slab carrying SR 1 over Deptmer Ditch in Allen County, Indiana. It was built in 1984 and reconstructed in 2016, so it is 41 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 11,561 vehicles a day, roughly 7% of them trucks, projected to reach 16,432 by 2034. The structure is 72 ft (21.9 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 1
CrossesDeptmer Ditch
Location01.18 S I-469
RouteState Highway 1
CountyAllen County
StateIndiana
Coordinates40.9371, -85.16743
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span27 ft (8.2 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,561 (2021)
Projected traffic16,432 by 2034
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 1 over Deptmer Ditch built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 2016.

What condition is SR 1 over Deptmer 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 July 2024.

How much traffic does SR 1 over Deptmer Ditch carry?

About 11,561 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR 1 over Deptmer Ditch?

The structure is 72 ft (21.9 m) long with a longest span of 27 ft (8.2 m) and a deck 46 ft wide.

Who owns SR 1 over Deptmer Ditch?

It is owned by the State Highway Agency.