US Bridges

OR-3 over Rocky Branch

Good

Menard County, Illinois · New Salem State Park · Structure no. 065920300000000

Built
2018
7 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
25
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

OR-3 over Rocky Branch is a concrete culvert carrying OR-3 over Rocky Branch in Menard County, Illinois. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 80% of them trucks, projected to reach 25 by 2046. The structure is 26 ft (8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOR-3
CrossesRocky Branch
LocationNew Salem State Park
Coordinates39.97592, -89.84196
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length26 ft (8 m)
Longest span13 ft (4 m)
Deck width44 ft (13.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic25 by 2046
Trucks80%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 OR-3 over Rocky Branch built?

It was built in 2018, making it 7 years old in 2025.

What condition is OR-3 over Rocky Branch 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 December 2023.

How much traffic does OR-3 over Rocky Branch carry?

About 25 vehicles per day (2020 count), of which roughly 80% are trucks.

How long is OR-3 over Rocky Branch?

The structure is 26 ft (8 m) long with a longest span of 13 ft (4 m) and a deck 44 ft wide.

Who owns OR-3 over Rocky Branch?

It is owned by the State Park, Forest, or Reservation Agency.