US Bridges

Il 251 over Green River Trib.

Good

Lee County, Illinois · 4 Mi. N. of US 30 · Structure no. 052202400000000

Built
1995
30 years old
Condition
Good
inspected February 2022
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 251 over Green River Trib. is a concrete culvert carrying Il 251 over Green River Trib. in Lee County, Illinois. It was built in 1995, so it is 30 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,111 by 2046. The structure is 29 ft (8.9 m) long and 51 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIl 251
CrossesGreen River Trib.
Location4 Mi. N. of US 30
RouteState Highway 251
CountyLee County
StateIllinois
Coordinates41.81788, -89.08326
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length29 ft (8.9 m)
Longest span14 ft (4.3 m)
Deck width51 ft (15.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,111 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 251 over Green River Trib. built?

It was built in 1995, making it 30 years old in 2025.

What condition is Il 251 over Green River Trib. 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 February 2022.

How much traffic does Il 251 over Green River Trib. carry?

About 1,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Il 251 over Green River Trib.?

The structure is 29 ft (8.9 m) long with a longest span of 14 ft (4.3 m) and a deck 51 ft wide.

Who owns Il 251 over Green River Trib.?

It is owned by the State Highway Agency.