US Bridges

TR 21 over Moon Creek

Poor

Livingston County, Illinois · 165 E 3050 N · Structure no. 053310500000000

Built
1931
94 years old
Condition
Poor
inspected December 2022
Type
Other
Concrete
Length
46 ft
1 main span
Daily traffic
75
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 21 over Moon Creek is a concrete other carrying TR 21 over Moon Creek in Livingston County, Illinois. It was built in 1931, so it is 94 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 75 vehicles a day, projected to reach 76 by 2046. The structure is 46 ft (14 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesTR 21
CrossesMoon Creek
Location165 E 3050 N
RouteCounty Highway 0
CountyLivingston County
StateIllinois
Coordinates41.06724, -88.89829
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeOther
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width25 ft (7.5 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic76 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$75,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 21 over Moon Creek built?

It was built in 1931, making it 94 years old in 2025.

What condition is TR 21 over Moon Creek 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 December 2022.

How much traffic does TR 21 over Moon Creek carry?

About 75 vehicles per day (2023 count).

How long is TR 21 over Moon Creek?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 25 ft wide.

Who owns TR 21 over Moon Creek?

It is owned by the Town or Township Highway Agency.