US Bridges

Three Oaks Road over I-94

Fair

Berrien County, Michigan · 1.5 MI SE of Harbert · Structure no. 000000000000805

Built
1960
65 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
259 ft
4 main spans
Daily traffic
3,740
1990 count
Owner
State
State Highway Agency

About this bridge

Three Oaks Road over I-94 is a steel stringer/multi-beam or girder carrying Three Oaks Road over I-94 in Berrien County, Michigan. It was built in 1960, so it is 65 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 3,740 vehicles a day, roughly 3% of them trucks, projected to reach 24,900 by 2025. The structure is 259 ft (78.9 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesThree Oaks Road
CrossesI-94
Location1.5 MI SE of Harbert
RouteCounty Highway 1121
Coordinates41.86376, -86.60967
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJuly 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length259 ft (78.9 m)
Longest span88 ft (26.8 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,740 (1990)
Projected traffic24,900 by 2025
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$98,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Three Oaks Road over I-94 built?

It was built in 1960, making it 65 years old in 2025.

What condition is Three Oaks Road 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 July 2024.

How much traffic does Three Oaks Road over I-94 carry?

About 3,740 vehicles per day (1990 count), of which roughly 3% are trucks.

How long is Three Oaks Road over I-94?

The structure is 259 ft (78.9 m) long with a longest span of 88 ft (26.8 m) and a deck 35 ft wide.

Who owns Three Oaks Road over I-94?

It is owned by the State Highway Agency.