US Bridges

Madden RD over Martin Johnson Main

FairPosted for load

Allen County, Indiana · 00.32 N Watterson Road · Structure no. 0200645

Built
1978
47 years old
Condition
Fair
inspected June 2024
Type
Culvert
Steel
Length
25 ft
2 main spans
Daily traffic
433
2018 count
Owner
County
County Highway Agency

About this bridge

Madden RD over Martin Johnson Main is a steel culvert carrying Madden RD over Martin Johnson Main in Allen County, Indiana. It was built in 1978, so it is 47 years old, older 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. Its operating status is: posted for load restriction.

It carries about 433 vehicles a day, roughly 5% of them trucks, projected to reach 648 by 2038. The structure is 25 ft (7.7 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMadden RD
CrossesMartin Johnson Main
Location00.32 N Watterson Road
RouteCounty Highway 0
CountyAllen County
StateIndiana
Coordinates41.21773, -85.28291
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.2 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span12 ft (3.7 m)
Deck width58 ft (17.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic433 (2018)
Projected traffic648 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 Madden RD over Martin Johnson Main built?

It was built in 1978, making it 47 years old in 2025.

What condition is Madden RD over Martin Johnson Main 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 June 2024.

How much traffic does Madden RD over Martin Johnson Main carry?

About 433 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Madden RD over Martin Johnson Main?

The structure is 25 ft (7.7 m) long with a longest span of 12 ft (3.7 m) and a deck 58 ft wide.

Who owns Madden RD over Martin Johnson Main?

It is owned by the County Highway Agency.