US Bridges

Maple Rd/ TR 177 over TR1B to Silver Ck

Good

Madison County, Illinois · 1.5MI S Hamel · Structure no. 060321400000000

Built
1973
52 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
38 ft
2 main spans
Daily traffic
150
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Maple Rd/ TR 177 over TR1B to Silver Ck is a steel culvert carrying Maple Rd/ TR 177 over TR1B to Silver Ck in Madison County, Illinois. It was built in 1973, so it is 52 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 14% of them trucks, projected to reach 161 by 2046. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMaple Rd/ TR 177
CrossesTR1B to Silver Ck
Location1.5MI S Hamel
RouteCounty Highway 0
Coordinates38.85996, -89.84798
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span17 ft (5.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic161 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Maple Rd/ TR 177 over TR1B to Silver Ck built?

It was built in 1973, making it 52 years old in 2025.

What condition is Maple Rd/ TR 177 over TR1B to Silver Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Maple Rd/ TR 177 over TR1B to Silver Ck carry?

About 150 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Maple Rd/ TR 177 over TR1B to Silver Ck?

The structure is 38 ft (11.6 m) long with a longest span of 17 ft (5.3 m).

Who owns Maple Rd/ TR 177 over TR1B to Silver Ck?

It is owned by the Town or Township Highway Agency.