US Bridges

I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv

Fair

Macon County, Illinois · N Edge Harristown · Structure no. 058006900000000

Built
1976
49 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
211 ft
2 main spans
Daily traffic
7,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv is a steel continuous stringer/multi-beam or girder carrying I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv 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 7,000 vehicles a day, roughly 26% of them trucks, projected to reach 6,919 by 2046. The structure is 211 ft (64.3 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-72(EB) & US 51(N
CrossesFAU 7381(HARSTWN Blv
LocationN Edge Harristown
RouteInterstate 72
CountyMacon County
StateIllinois
Coordinates39.84669, -89.04564
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length211 ft (64.3 m)
Longest span89 ft (27.1 m)
Deck width69 ft (21 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2023)
Projected traffic6,919 by 2046
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv built?

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

What condition is I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv 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 February 2024.

How much traffic does I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv carry?

About 7,000 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv?

The structure is 211 ft (64.3 m) long with a longest span of 89 ft (27.1 m) and a deck 69 ft wide.

Who owns I-72(EB) & US 51(N over FAU 7381(HARSTWN Blv?

It is owned by the State Highway Agency.