US Bridges

SR 1 over Martin Ditch

Good

Allen County, Indiana · 00.63 N I-69 · Structure no. 000437

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
16,275
2020 count
Owner
State
State Highway Agency

About this bridge

SR 1 over Martin Ditch is a concrete culvert carrying SR 1 over Martin Ditch in Allen County, Indiana. It was built in 2009, so it is 16 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 16,275 vehicles a day, roughly 10% of them trucks, projected to reach 49,380 by 2030. The structure is 30 ft (9.2 m) long and 84 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR 1
CrossesMartin Ditch
Location00.63 N I-69
RouteState Highway 1
CountyAllen County
StateIndiana
Coordinates41.17919, -85.09093
Functional classRural Major Collector

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating57.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length30 ft (9.2 m)
Longest span28 ft (8.4 m)
Deck width84 ft (25.6 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,275 (2020)
Projected traffic49,380 by 2030
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Martin Ditch built?

It was built in 2009, making it 16 years old in 2025.

What condition is SR 1 over Martin 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 2023.

How much traffic does SR 1 over Martin Ditch carry?

About 16,275 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SR 1 over Martin Ditch?

The structure is 30 ft (9.2 m) long with a longest span of 28 ft (8.4 m) and a deck 84 ft wide.

Who owns SR 1 over Martin Ditch?

It is owned by the State Highway Agency.