US Bridges

TR 56(GLASGOW Rd) over Stream

Poor

Macon County, Illinois · 5.2 MI SW of Maroa · Structure no. 058318600000000

Built
1972
53 years old
Condition
Poor
inspected February 2025
Type
Channel Beam
Concrete
Length
62 ft
3 main spans
Daily traffic
100
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 56(GLASGOW Rd) over Stream is a concrete channel beam carrying TR 56(GLASGOW Rd) over Stream in Macon 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, roughly 12% of them trucks, projected to reach 101 by 2046. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTR 56(GLASGOW Rd)
CrossesStream
Location5.2 MI SW of Maroa
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates40.00748, -89.04778
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating33.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length62 ft (18.9 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic101 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 56(GLASGOW Rd) over Stream built?

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

What condition is TR 56(GLASGOW Rd) over Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does TR 56(GLASGOW Rd) over Stream carry?

About 100 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is TR 56(GLASGOW Rd) over Stream?

The structure is 62 ft (18.9 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns TR 56(GLASGOW Rd) over Stream?

It is owned by the Town or Township Highway Agency.