US Bridges

TR-128 Tynan RD over Murray Sluice

Poor

Grundy County, Illinois · .06 MI N Gr Ridge RD · Structure no. 032499100000000

Built
1981
44 years old
Condition
Poor
inspected October 2024
Type
Channel Beam
Concrete
Length
86 ft
3 main spans
Daily traffic
75
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-128 Tynan RD over Murray Sluice is a concrete channel beam carrying TR-128 Tynan RD over Murray Sluice in Grundy County, Illinois. It was built in 1981, so it is 44 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 75 vehicles a day, roughly 27% of them trucks, projected to reach 90 by 2046. The structure is 86 ft (26.2 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesTR-128 Tynan RD
CrossesMurray Sluice
Location.06 MI N Gr Ridge RD
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.24323, -88.37082
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span28 ft (8.5 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic90 by 2046
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-128 Tynan RD over Murray Sluice built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR-128 Tynan RD 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-128 Tynan RD over Murray Sluice carry?

About 75 vehicles per day (2024 count), of which roughly 27% are trucks.

How long is TR-128 Tynan RD over Murray Sluice?

The structure is 86 ft (26.2 m) long with a longest span of 28 ft (8.5 m) and a deck 26 ft wide.

Who owns TR-128 Tynan RD over Murray Sluice?

It is owned by the Town or Township Highway Agency.