US Bridges

TR-71 (park Road) over Rocky Branch

Good

Perry County, Illinois · 0.25 MI W Crossbill · Structure no. 073318400000000

Built
2017
8 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
100
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-71 (park Road) over Rocky Branch is a prestressed concrete box beam or girders - multiple carrying TR-71 (park Road) over Rocky Branch in Perry County, Illinois. It was built in 2017, so it is 8 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 100 vehicles a day, roughly 22% of them trucks, projected to reach 101 by 2046. The structure is 32 ft (9.7 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTR-71 (park Road)
CrossesRocky Branch
Location0.25 MI W Crossbill
RouteCounty Highway 0
CountyPerry County
StateIllinois
Coordinates38.14999, -89.30089
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.7 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic101 by 2046
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-71 (park Road) over Rocky Branch built?

It was built in 2017, making it 8 years old in 2025.

What condition is TR-71 (park Road) 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 January 2024.

How much traffic does TR-71 (park Road) over Rocky Branch carry?

About 100 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is TR-71 (park Road) over Rocky Branch?

The structure is 32 ft (9.7 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns TR-71 (park Road) over Rocky Branch?

It is owned by the Town or Township Highway Agency.