US Bridges

Iles Ave over Stream

Fair

Sangamon County, Illinois · Iles @ Chatham RD · Structure no. 084800600000000

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
1,750
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Iles Ave over Stream is a concrete continuous culvert carrying Iles Ave over Stream in Sangamon County, Illinois. It was built in 1970, so it is 55 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 1,750 vehicles a day, roughly 5% of them trucks, projected to reach 1,751 by 2046. The structure is 39 ft (11.9 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIles Ave
CrossesStream
LocationIles @ Chatham RD
CountySangamon County
StateIllinois
Coordinates39.77088, -89.68679
Functional classUrban Local

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.8 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length39 ft (11.9 m)
Longest span13 ft (3.9 m)
Deck width51 ft (15.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2022)
Projected traffic1,751 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Iles Ave over Stream built?

It was built in 1970, making it 55 years old in 2025.

What condition is Iles Ave 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 April 2023.

How much traffic does Iles Ave over Stream carry?

About 1,750 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Iles Ave over Stream?

The structure is 39 ft (11.9 m) long with a longest span of 13 ft (3.9 m) and a deck 51 ft wide.

Who owns Iles Ave over Stream?

It is owned by the City or Municipal Highway Agency.