US Bridges

I-69 EB over Gtw RR & Swartz Creek

Fair

Genesee County, Michigan · E of Miller @ Swartz Crk · Structure no. 000000000002526

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
284 ft
4 main spans
Daily traffic
19,829
2007 count
Owner
State
State Highway Agency

About this bridge

I-69 EB over Gtw RR & Swartz Creek is a steel stringer/multi-beam or girder carrying I-69 EB over Gtw RR & Swartz Creek in Genesee County, Michigan. It was built in 1968, so it is 57 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 19,829 vehicles a day, roughly 14% of them trucks, projected to reach 24,684 by 2018. The structure is 284 ft (86.7 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-69 EB
CrossesGtw RR & Swartz Creek
LocationE of Miller @ Swartz Crk
RouteInterstate 69
CountyGenesee County
StateMichigan
Coordinates42.9645, -83.80151
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating70 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length284 ft (86.7 m)
Longest span86 ft (26.2 m)
Deck width46 ft (14 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,829 (2007)
Projected traffic24,684 by 2018
Trucks14%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.2 mi (2 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 EB over Gtw RR & Swartz Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-69 EB over Gtw RR & Swartz Creek 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 November 2023.

How much traffic does I-69 EB over Gtw RR & Swartz Creek carry?

About 19,829 vehicles per day (2007 count), of which roughly 14% are trucks.

How long is I-69 EB over Gtw RR & Swartz Creek?

The structure is 284 ft (86.7 m) long with a longest span of 86 ft (26.2 m) and a deck 46 ft wide.

Who owns I-69 EB over Gtw RR & Swartz Creek?

It is owned by the State Highway Agency.