US Bridges

Ill 177 over US 51 - FAP 322

Fair

Washington County, Illinois · 0.5MI E Irvington · Structure no. 095006800000000

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
235 ft
2 main spans
Daily traffic
2,000
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 177 over US 51 - FAP 322 is a steel continuous stringer/multi-beam or girder carrying Ill 177 over US 51 - FAP 322 in Washington County, Illinois. It was built in 1994, so it is 31 years old, younger 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 6 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 2,000 vehicles a day, roughly 15% of them trucks, projected to reach 2,360 by 2046. The structure is 235 ft (71.5 m) long and 69 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIll 177
CrossesUS 51 - FAP 322
Location0.5MI E Irvington
RouteCounty Highway 0
CountyWashington County
StateIllinois
Coordinates38.43777, -89.14582
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length235 ft (71.5 m)
Longest span94 ft (28.6 m)
Deck width69 ft (21.1 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic2,360 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed9.9 mi (16 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 Ill 177 over US 51 - FAP 322 built?

It was built in 1994, making it 31 years old in 2025.

What condition is Ill 177 over US 51 - FAP 322 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 Ill 177 over US 51 - FAP 322 carry?

About 2,000 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Ill 177 over US 51 - FAP 322?

The structure is 235 ft (71.5 m) long with a longest span of 94 ft (28.6 m) and a deck 69 ft wide.

Who owns Ill 177 over US 51 - FAP 322?

It is owned by the State Highway Agency.