US Bridges

Il 73 over Stream

Fair

Carroll County, Illinois · 0.5 Mi. N. of Il 72 · Structure no. 008201600000000

Built
1996
29 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
2,550
2023 count
Owner
State
State Highway Agency

About this bridge

Il 73 over Stream is a concrete culvert carrying Il 73 over Stream in Carroll County, Illinois. It was built in 1996, so it is 29 years old, younger 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 2,550 vehicles a day, roughly 22% of them trucks, projected to reach 2,525 by 2046. The structure is 23 ft (7 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesIl 73
CrossesStream
Location0.5 Mi. N. of Il 72
RouteState Highway 73
CountyCarroll County
StateIllinois
Coordinates42.16271, -89.82411
Functional classRural Minor 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 inspectionOctober 2024
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 rating58.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2023)
Projected traffic2,525 by 2046
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 73 over Stream built?

It was built in 1996, making it 29 years old in 2025.

What condition is Il 73 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 October 2024.

How much traffic does Il 73 over Stream carry?

About 2,550 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is Il 73 over Stream?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns Il 73 over Stream?

It is owned by the State Highway Agency.