US Bridges

I-69 SB over Gtw Rr& Billwood HWY

Fair

Eaton County, Michigan · 4.0 MI NE of Potterville · Structure no. 000000000002265

Built
1989
36 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
247 ft
3 main spans
Daily traffic
15,001
2007 count
Owner
State
State Highway Agency

About this bridge

I-69 SB over Gtw Rr& Billwood HWY is a steel stringer/multi-beam or girder carrying I-69 SB over Gtw Rr& Billwood HWY in Eaton County, Michigan. It was built in 1989, so it is 36 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 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 15,001 vehicles a day, roughly 21% of them trucks, projected to reach 15,406 by 2018. The structure is 247 ft (75.3 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-69 SB
CrossesGtw Rr& Billwood HWY
Location4.0 MI NE of Potterville
RouteInterstate 69
CountyEaton County
StateMichigan
Coordinates42.66927, -84.68252
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length247 ft (75.3 m)
Longest span145 ft (44.2 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,001 (2007)
Projected traffic15,406 by 2018
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-69 SB over Gtw Rr& Billwood HWY built?

It was built in 1989, making it 36 years old in 2025.

What condition is I-69 SB over Gtw Rr& Billwood HWY 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 2023.

How much traffic does I-69 SB over Gtw Rr& Billwood HWY carry?

About 15,001 vehicles per day (2007 count), of which roughly 21% are trucks.

How long is I-69 SB over Gtw Rr& Billwood HWY?

The structure is 247 ft (75.3 m) long with a longest span of 145 ft (44.2 m) and a deck 47 ft wide.

Who owns I-69 SB over Gtw Rr& Billwood HWY?

It is owned by the State Highway Agency.