US Bridges

Suydam RD over Little Indian Creek

Fair

DeKalb County, Illinois · 200N 615E · Structure no. 019306800000000

Built
2007
18 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
1 main span
Daily traffic
475
2024 count
Owner
County
County Highway Agency

About this bridge

Suydam RD over Little Indian Creek is a steel stringer/multi-beam or girder carrying Suydam RD over Little Indian Creek in DeKalb County, Illinois. It was built in 2007, so it is 18 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 475 vehicles a day, roughly 6% of them trucks, projected to reach 476 by 2046. The structure is 81 ft (24.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSuydam RD
CrossesLittle Indian Creek
Location200N 615E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates41.6604, -88.81563
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span75 ft (22.9 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2024)
Projected traffic476 by 2046
Trucks6%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Suydam RD over Little Indian Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Suydam RD over Little Indian Creek 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 2023.

How much traffic does Suydam RD over Little Indian Creek carry?

About 475 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Suydam RD over Little Indian Creek?

The structure is 81 ft (24.7 m) long with a longest span of 75 ft (22.9 m) and a deck 32 ft wide.

Who owns Suydam RD over Little Indian Creek?

It is owned by the County Highway Agency.