US Bridges

TR 132A Rockyford over I-88

Fair

Lee County, Illinois · 2 MI SW Franklin Grv · Structure no. 052993000000000

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
219 ft
4 main spans
Daily traffic
125
2017 count
Owner
Toll Authority
State Toll Authority

About this bridge

TR 132A Rockyford over I-88 is a prestressed concrete stringer/multi-beam or girder carrying TR 132A Rockyford over I-88 in Lee County, Illinois. It was built in 1974, so it is 51 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 125 vehicles a day, projected to reach 126 by 2046. The structure is 219 ft (66.8 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTR 132A Rockyford
CrossesI-88
Location2 MI SW Franklin Grv
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.82263, -89.34203
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length219 ft (66.8 m)
Longest span78 ft (23.8 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2017)
Projected traffic126 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 132A Rockyford over I-88 built?

It was built in 1974, making it 51 years old in 2025.

What condition is TR 132A Rockyford over I-88 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does TR 132A Rockyford over I-88 carry?

About 125 vehicles per day (2017 count).

How long is TR 132A Rockyford over I-88?

The structure is 219 ft (66.8 m) long with a longest span of 78 ft (23.8 m) and a deck 30 ft wide.

Who owns TR 132A Rockyford over I-88?

It is owned by the State Toll Authority.