US Bridges

TR 177 (maple Rd) over FAI 55

Fair

Madison County, Illinois · 2 M S JCT 140 · Structure no. 060018000000000

Built
1966
59 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
4 main spans
Daily traffic
350
2021 count
Owner
State
State Highway Agency

About this bridge

TR 177 (maple Rd) over FAI 55 is a steel continuous stringer/multi-beam or girder carrying TR 177 (maple Rd) over FAI 55 in Madison County, Illinois. It was built in 1966, so it is 59 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 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 350 vehicles a day, roughly 16% of them trucks, projected to reach 375 by 2046. The structure is 224 ft (68.2 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesTR 177 (maple Rd)
CrossesFAI 55
Location2 M S JCT 140
RouteCounty Highway 0
CountyMadison County
StateIllinois
Coordinates38.86006, -89.85834
Functional classRural Local

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length224 ft (68.2 m)
Longest span67 ft (20.5 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2021)
Projected traffic375 by 2046
Trucks16%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$517,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 177 (maple Rd) over FAI 55 built?

It was built in 1966, making it 59 years old in 2025.

What condition is TR 177 (maple Rd) over FAI 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 February 2024.

How much traffic does TR 177 (maple Rd) over FAI 55 carry?

About 350 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is TR 177 (maple Rd) over FAI 55?

The structure is 224 ft (68.2 m) long with a longest span of 67 ft (20.5 m) and a deck 30 ft wide.

Who owns TR 177 (maple Rd) over FAI 55?

It is owned by the State Highway Agency.