US Bridges

I-69 over Riley-Wales Drain

Good

St. Clair County, Michigan · 1.0 MI East of M-19 · Structure no. 000000000013693

Built
2016
9 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
13,250
2015 count
Owner
State
State Highway Agency

About this bridge

I-69 over Riley-Wales Drain is a concrete culvert carrying I-69 over Riley-Wales Drain in St. Clair County, Michigan. It was built in 2016, so it is 9 years old, younger 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 13,250 vehicles a day, roughly 25% of them trucks, projected to reach 15,400 by 2035. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI-69
CrossesRiley-Wales Drain
Location1.0 MI East of M-19
RouteInterstate 69
Coordinates42.97605, -82.74616
Functional classRural Principal Arterial - Interstate

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.5 US tons
Inventory rating74.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length20 ft (6.2 m)
Longest span18 ft (5.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,250 (2015)
Projected traffic15,400 by 2035
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-69 over Riley-Wales Drain built?

It was built in 2016, making it 9 years old in 2025.

What condition is I-69 over Riley-Wales Drain 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 March 2023.

How much traffic does I-69 over Riley-Wales Drain carry?

About 13,250 vehicles per day (2015 count), of which roughly 25% are trucks.

How long is I-69 over Riley-Wales Drain?

The structure is 20 ft (6.2 m) long with a longest span of 18 ft (5.6 m).

Who owns I-69 over Riley-Wales Drain?

It is owned by the State Highway Agency.