US Bridges

Platt RD over I-94

Fair

Washtenaw County, Michigan · 0.8 MI W of US-23 · Structure no. 000000000010837

Built
1998
27 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
264 ft
2 main spans
Daily traffic
14,700
1993 count
Owner
State
State Highway Agency

About this bridge

Platt RD over I-94 is a steel continuous stringer/multi-beam or girder carrying Platt RD over I-94 in Washtenaw County, Michigan. It was built in 1998, so it is 27 years old, younger 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 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 14,700 vehicles a day, roughly 5% of them trucks, projected to reach 24,000 by 2013. The structure is 264 ft (80.6 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPlatt RD
CrossesI-94
Location0.8 MI W of US-23
RouteCounty Highway 2006
CountyWashtenaw County
StateMichigan
Coordinates42.23219, -83.69987
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating90.4 US tons
Inventory rating53.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length264 ft (80.6 m)
Longest span132 ft (40.3 m)
Deck width76 ft (23.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,700 (1993)
Projected traffic24,000 by 2013
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Platt RD over I-94 built?

It was built in 1998, making it 27 years old in 2025.

What condition is Platt RD over I-94 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 Platt RD over I-94 carry?

About 14,700 vehicles per day (1993 count), of which roughly 5% are trucks.

How long is Platt RD over I-94?

The structure is 264 ft (80.6 m) long with a longest span of 132 ft (40.3 m) and a deck 76 ft wide.

Who owns Platt RD over I-94?

It is owned by the State Highway Agency.