US Bridges

Ch 33 Rocky Ford R over Green River Tributry

Fair

Lee County, Illinois · 2 MI S of Amboy · Structure no. 052351100000000

Built
1958
67 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
35 ft
1 main span
Daily traffic
225
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 33 Rocky Ford R over Green River Tributry is a concrete slab carrying Ch 33 Rocky Ford R over Green River Tributry in Lee County, Illinois. It was built in 1958, so it is 67 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 225 vehicles a day, roughly 12% of them trucks, projected to reach 455 by 2046. The structure is 35 ft (10.7 m) long and 29 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCh 33 Rocky Ford R
CrossesGreen River Tributry
Location2 MI S of Amboy
RouteCounty Highway 0
Coordinates41.67525, -89.34093
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2022)
Projected traffic455 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 33 Rocky Ford R over Green River Tributry built?

It was built in 1958, making it 67 years old in 2025.

What condition is Ch 33 Rocky Ford R over Green River Tributry 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 January 2024.

How much traffic does Ch 33 Rocky Ford R over Green River Tributry carry?

About 225 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Ch 33 Rocky Ford R over Green River Tributry?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 29 ft wide.

Who owns Ch 33 Rocky Ford R over Green River Tributry?

It is owned by the County Highway Agency.