US Bridges

Rattalee Lake RD over I-75

Good

Oakland County, Michigan · 4.8 MI NW of M-10 · Structure no. 000000000008035

Built
1963
62 years old, rebuilt 2023
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
282 ft
4 main spans
Daily traffic
1,420
1974 count
Owner
State
State Highway Agency

About this bridge

Rattalee Lake RD over I-75 is a steel stringer/multi-beam or girder carrying Rattalee Lake RD over I-75 in Oakland County, Michigan. It was built in 1963 and reconstructed in 2023, so it is 62 years old, older than the Michigan average of 48.3 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 1,420 vehicles a day, roughly 3% of them trucks, projected to reach 1,420 by 1977. The structure is 282 ft (85.9 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRattalee Lake RD
CrossesI-75
Location4.8 MI NW of M-10
RouteCounty Highway 0
CountyOakland County
StateMichigan
Coordinates42.7728, -83.52379
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length282 ft (85.9 m)
Longest span93 ft (28.2 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,420 (1974)
Projected traffic1,420 by 1977
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$863,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rattalee Lake RD over I-75 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2023.

What condition is Rattalee Lake RD over I-75 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 August 2024.

How much traffic does Rattalee Lake RD over I-75 carry?

About 1,420 vehicles per day (1974 count), of which roughly 3% are trucks.

How long is Rattalee Lake RD over I-75?

The structure is 282 ft (85.9 m) long with a longest span of 93 ft (28.2 m) and a deck 32 ft wide.

Who owns Rattalee Lake RD over I-75?

It is owned by the State Highway Agency.