US Bridges

Old US 36 over Br Long Point Slough

Fair

Sangamon County, Illinois · .04M E Ch 33 Iliopol · Structure no. 084200900000000

Built
1975
50 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
1,000
2022 count
Owner
State
State Highway Agency

About this bridge

Old US 36 over Br Long Point Slough is a concrete continuous culvert carrying Old US 36 over Br Long Point Slough in Sangamon County, Illinois. It was built in 1975, so it is 50 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 5 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 1,000 vehicles a day, roughly 9% of them trucks, projected to reach 505 by 2046. The structure is 32 ft (9.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld US 36
CrossesBr Long Point Slough
Location.04M E Ch 33 Iliopol
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.84448, -89.25447
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length32 ft (9.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic505 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Old US 36 over Br Long Point Slough built?

It was built in 1975, making it 50 years old in 2025.

What condition is Old US 36 over Br Long Point Slough 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 Old US 36 over Br Long Point Slough carry?

About 1,000 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Old US 36 over Br Long Point Slough?

The structure is 32 ft (9.9 m) long with a longest span of 10 ft (3 m).

Who owns Old US 36 over Br Long Point Slough?

It is owned by the State Highway Agency.