US Bridges

TR 115 over Murray Sluice

Poor

Grundy County, Illinois · 3/4M S 3/4M E Mazon · Structure no. 032507000000000

Built
1996
29 years old
Condition
Poor
inspected October 2024
Type
Channel Beam
Concrete
Length
98 ft
3 main spans
Daily traffic
275
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 115 over Murray Sluice is a concrete channel beam carrying TR 115 over Murray Sluice in Grundy County, Illinois. It was built in 1996, so it is 29 years old, younger 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 275 vehicles a day, roughly 19% of them trucks, projected to reach 330 by 2046. The structure is 98 ft (29.8 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 115
CrossesMurray Sluice
Location3/4M S 3/4M E Mazon
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.22318, -88.41259
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length98 ft (29.8 m)
Longest span32 ft (9.8 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2019)
Projected traffic330 by 2046
Trucks19%
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 115 over Murray Sluice built?

It was built in 1996, making it 29 years old in 2025.

What condition is TR 115 over Murray Sluice 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 October 2024.

How much traffic does TR 115 over Murray Sluice carry?

About 275 vehicles per day (2019 count), of which roughly 19% are trucks.

How long is TR 115 over Murray Sluice?

The structure is 98 ft (29.8 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns TR 115 over Murray Sluice?

It is owned by the Town or Township Highway Agency.