US Bridges

Ch 14 Amboy RD over Main Ditch Ch 14 Amb

Fair

Lee County, Illinois · 1.0 MI E of Ill 26 · Structure no. 052326100000000

Built
1946
79 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
96 ft
2 main spans
Daily traffic
550
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 14 Amboy RD over Main Ditch Ch 14 Amb is a concrete slab carrying Ch 14 Amboy RD over Main Ditch Ch 14 Amb in Lee County, Illinois. It was built in 1946, so it is 79 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 550 vehicles a day, roughly 9% of them trucks, projected to reach 657 by 2046. The structure is 96 ft (29.3 m) long and 30 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesCh 14 Amboy RD
CrossesMain Ditch Ch 14 Amb
Location1.0 MI E of Ill 26
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.70749, -89.43877
Functional classRural Major 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 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length96 ft (29.3 m)
Longest span48 ft (14.6 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2022)
Projected traffic657 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 14 Amboy RD over Main Ditch Ch 14 Amb built?

It was built in 1946, making it 79 years old in 2025.

What condition is Ch 14 Amboy RD over Main Ditch Ch 14 Amb 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 2025.

How much traffic does Ch 14 Amboy RD over Main Ditch Ch 14 Amb carry?

About 550 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Ch 14 Amboy RD over Main Ditch Ch 14 Amb?

The structure is 96 ft (29.3 m) long with a longest span of 48 ft (14.6 m) and a deck 30 ft wide.

Who owns Ch 14 Amboy RD over Main Ditch Ch 14 Amb?

It is owned by the County Highway Agency.