US Bridges

Chilson RD over I-96

Fair

Livingston County, Michigan · 3.0 MI SE of M-155 · Structure no. 000000000005782

Built
1962
63 years old, rebuilt 2000
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
320 ft
4 main spans
Daily traffic
3,228
2015 count
Owner
State
State Highway Agency

About this bridge

Chilson RD over I-96 is a steel stringer/multi-beam or girder carrying Chilson RD over I-96 in Livingston County, Michigan. It was built in 1962 and reconstructed in 2000, so it is 63 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 3,228 vehicles a day, roughly 3% of them trucks, projected to reach 3,712 by 2035. The structure is 320 ft (97.5 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesChilson RD
CrossesI-96
Location3.0 MI SE of M-155
RouteCounty Highway 4755
CountyLivingston County
StateMichigan
Coordinates42.58153, -83.89694
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
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 inspectionApril 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length320 ft (97.5 m)
Longest span106 ft (32.3 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,228 (2015)
Projected traffic3,712 by 2035
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Chilson RD over I-96 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2000.

What condition is Chilson RD over I-96 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 April 2023.

How much traffic does Chilson RD over I-96 carry?

About 3,228 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Chilson RD over I-96?

The structure is 320 ft (97.5 m) long with a longest span of 106 ft (32.3 m) and a deck 35 ft wide.

Who owns Chilson RD over I-96?

It is owned by the State Highway Agency.