US Bridges

US 51 over Stream

Fair

Union County, Illinois · 1.6 MI N of Il 146 · Structure no. 091200200000000

Built
1964
61 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
5,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 over Stream is a concrete continuous culvert carrying US 51 over Stream in Union County, Illinois. It was built in 1964, so it is 61 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 5,950 vehicles a day, roughly 12% of them trucks, projected to reach 5,353 by 2046. The structure is 44 ft (13.3 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesUS 51
CrossesStream
Location1.6 MI N of Il 146
RouteU.S. Route 51
CountyUnion County
StateIllinois
Coordinates37.48583, -89.23279
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.3 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,950 (2023)
Projected traffic5,353 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes

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 US 51 over Stream built?

It was built in 1964, making it 61 years old in 2025.

What condition is US 51 over Stream 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 December 2023.

How much traffic does US 51 over Stream carry?

About 5,950 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 51 over Stream?

The structure is 44 ft (13.3 m) long with a longest span of 17 ft (5.2 m).

Who owns US 51 over Stream?

It is owned by the State Highway Agency.