US Bridges

Storm RD TR-180 over East Fk Mazon River

Poor

Grundy County, Illinois · .33 MI S Stonewall R · Structure no. 032589100000000

Built
1979
46 years old
Condition
Poor
inspected October 2024
Type
Channel Beam
Concrete
Length
61 ft
2 main spans
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Storm RD TR-180 over East Fk Mazon River is a concrete channel beam carrying Storm RD TR-180 over East Fk Mazon River in Grundy County, Illinois. It was built in 1979, so it is 46 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 3 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 50 vehicles a day, projected to reach 60 by 2046. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesStorm RD TR-180
CrossesEast Fk Mazon River
Location.33 MI S Stonewall R
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.1375, -88.29935
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.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span30 ft (9.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic60 by 2046
Trucks0%
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 Storm RD TR-180 over East Fk Mazon River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Storm RD TR-180 over East Fk Mazon River 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 Storm RD TR-180 over East Fk Mazon River carry?

About 50 vehicles per day (2024 count).

How long is Storm RD TR-180 over East Fk Mazon River?

The structure is 61 ft (18.6 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Storm RD TR-180 over East Fk Mazon River?

It is owned by the Town or Township Highway Agency.