US Bridges

Blackman RD over I-94

Fair

Jackson County, Michigan · 0.5 MI W of M-60 · Structure no. 000000000004415

Built
1958
67 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
161 ft
4 main spans
Daily traffic
3,400
1993 count
Owner
State
State Highway Agency

About this bridge

Blackman RD over I-94 is a steel stringer/multi-beam or girder carrying Blackman RD over I-94 in Jackson County, Michigan. It was built in 1958, so it is 67 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 3,400 vehicles a day, projected to reach 1,330 by 1994. The structure is 161 ft (49.1 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesBlackman RD
CrossesI-94
Location0.5 MI W of M-60
RouteCounty Highway 0
CountyJackson County
StateMichigan
Coordinates42.26891, -84.48317
Functional classUrban 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
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 inspectionJanuary 2025
Inspection intervalevery 4 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 alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length161 ft (49.1 m)
Longest span48 ft (14.5 m)
Deck width33 ft (10.2 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (1993)
Projected traffic1,330 by 1994
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Blackman RD over I-94 built?

It was built in 1958, making it 67 years old in 2025.

What condition is Blackman RD 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 January 2025.

How much traffic does Blackman RD over I-94 carry?

About 3,400 vehicles per day (1993 count).

How long is Blackman RD over I-94?

The structure is 161 ft (49.1 m) long with a longest span of 48 ft (14.5 m) and a deck 33 ft wide.

Who owns Blackman RD over I-94?

It is owned by the State Highway Agency.