US Bridges

Ch 27(FAS 551) over I-72

Fair

Macon County, Illinois · 1 MI SW Harristown · Structure no. 058006200000000

Built
1976
49 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
259 ft
2 main spans
Daily traffic
300
2020 count
Owner
State
State Highway Agency

About this bridge

Ch 27(FAS 551) over I-72 is a steel continuous stringer/multi-beam or girder carrying Ch 27(FAS 551) over I-72 in Macon County, Illinois. It was built in 1976, so it is 49 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 300 vehicles a day, roughly 20% of them trucks, projected to reach 303 by 2046. The structure is 259 ft (78.9 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesCh 27(FAS 551)
CrossesI-72
Location1 MI SW Harristown
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.83112, -89.10407
Functional classRural Minor 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 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length259 ft (78.9 m)
Longest span105 ft (32.1 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2020)
Projected traffic303 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Ch 27(FAS 551) over I-72 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Ch 27(FAS 551) over I-72 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 Ch 27(FAS 551) over I-72 carry?

About 300 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Ch 27(FAS 551) over I-72?

The structure is 259 ft (78.9 m) long with a longest span of 105 ft (32.1 m) and a deck 36 ft wide.

Who owns Ch 27(FAS 551) over I-72?

It is owned by the State Highway Agency.