US Bridges

1200 N / Ch 8 over I-55

Fair

Livingston County, Illinois · 1 Mi.W.Of Ocoya · Structure no. 053012200000000

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
254 ft
2 main spans
Daily traffic
425
2023 count
Owner
State
State Highway Agency

About this bridge

1200 N / Ch 8 over I-55 is a steel continuous box beam or girders - single or spread carrying 1200 N / Ch 8 over I-55 in Livingston County, Illinois. It was built in 1972, so it is 53 years old, older than the Illinois average of 45.3 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 425 vehicles a day, roughly 24% of them trucks, projected to reach 404 by 2046. The structure is 254 ft (77.4 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries1200 N / Ch 8
CrossesI-55
Location1 Mi.W.Of Ocoya
RouteCounty Highway 0
CountyLivingston County
StateIllinois
Coordinates40.80015, -88.69982
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length254 ft (77.4 m)
Longest span109 ft (33.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2023)
Projected traffic404 by 2046
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 1200 N / Ch 8 over I-55 built?

It was built in 1972, making it 53 years old in 2025.

What condition is 1200 N / Ch 8 over I-55 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 October 2024.

How much traffic does 1200 N / Ch 8 over I-55 carry?

About 425 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is 1200 N / Ch 8 over I-55?

The structure is 254 ft (77.4 m) long with a longest span of 109 ft (33.2 m) and a deck 30 ft wide.

Who owns 1200 N / Ch 8 over I-55?

It is owned by the State Highway Agency.