US Bridges

Ch 1 Lost Nation R over Rock River Tributary

Fair

Lee County, Illinois · 0.7 MI E Ill Rt 2 · Structure no. 052369000000000

Built
1963
62 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
1,900
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 1 Lost Nation R over Rock River Tributary is a concrete continuous slab carrying Ch 1 Lost Nation R over Rock River Tributary in Lee County, Illinois. It was built in 1963, so it is 62 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 1,900 vehicles a day, roughly 5% of them trucks, projected to reach 2,525 by 2046. The structure is 78 ft (23.7 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCh 1 Lost Nation R
CrossesRock River Tributary
Location0.7 MI E Ill Rt 2
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.86639, -89.41531
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating52.1 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length78 ft (23.7 m)
Longest span28 ft (8.6 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2022)
Projected traffic2,525 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$375,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ch 1 Lost Nation R over Rock River Tributary built?

It was built in 1963, making it 62 years old in 2025.

What condition is Ch 1 Lost Nation R over Rock River Tributary 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 February 2025.

How much traffic does Ch 1 Lost Nation R over Rock River Tributary carry?

About 1,900 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ch 1 Lost Nation R over Rock River Tributary?

The structure is 78 ft (23.7 m) long with a longest span of 28 ft (8.6 m) and a deck 30 ft wide.

Who owns Ch 1 Lost Nation R over Rock River Tributary?

It is owned by the County Highway Agency.