US Bridges

TR 51 over Dearcy Br.

Good

Jersey County, Illinois · 0.8 M N. Jerseyville · Structure no. 042312300000000

Built
1994
31 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
50
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 51 over Dearcy Br. is a prestressed concrete box beam or girders - multiple carrying TR 51 over Dearcy Br. in Jersey County, Illinois. It was built in 1994, so it is 31 years old, younger 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 50 vehicles a day, roughly 14% of them trucks, projected to reach 51 by 2046. The structure is 45 ft (13.7 m) long and 24 ft wide.

CarriesTR 51
CrossesDearcy Br.
Location0.8 M N. Jerseyville
RouteCounty Highway 0
Coordinates39.14535, -90.35004
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span43 ft (13 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2017)
Projected traffic51 by 2046
Trucks14%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 51 over Dearcy Br. built?

It was built in 1994, making it 31 years old in 2025.

What condition is TR 51 over Dearcy Br. 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 February 2023.

How much traffic does TR 51 over Dearcy Br. carry?

About 50 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is TR 51 over Dearcy Br.?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13 m) and a deck 24 ft wide.

Who owns TR 51 over Dearcy Br.?

It is owned by the Town or Township Highway Agency.