US Bridges

Christiana Drive over Juno Lake Channel

Fair

Cass County, Michigan · At Juno Lake · Structure no. 000000000001453

Built
1932
93 years old, rebuilt 2004
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
148
2004 count
Owner
County
County Highway Agency

About this bridge

Christiana Drive over Juno Lake Channel is a wood or timber slab carrying Christiana Drive over Juno Lake Channel in Cass County, Michigan. It was built in 1932 and reconstructed in 2004, so it is 93 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 148 vehicles a day, roughly 1% of them trucks, projected to reach 250 by 2024. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 198.8 mi (320 km).

Location

Open in Google Maps
CarriesChristiana Drive
CrossesJuno Lake Channel
LocationAt Juno Lake
RouteCounty Highway 0
CountyCass County
StateMichigan
Coordinates41.80669, -85.99081
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating40 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 width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148 (2004)
Projected traffic250 by 2024
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 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 Christiana Drive over Juno Lake Channel built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 2004.

What condition is Christiana Drive over Juno Lake Channel 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 October 2024.

How much traffic does Christiana Drive over Juno Lake Channel carry?

About 148 vehicles per day (2004 count), of which roughly 1% are trucks.

How long is Christiana Drive over Juno Lake Channel?

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

Who owns Christiana Drive over Juno Lake Channel?

It is owned by the County Highway Agency.