US Bridges

TR 108 over Stream

Fair

Douglas County, Illinois · 2.25 MI S of Tuscola · Structure no. 021412200000000

Built
1938
87 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
550
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 108 over Stream is a concrete culvert carrying TR 108 over Stream in Douglas County, Illinois. It was built in 1938, so it is 87 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 550 vehicles a day, roughly 1% of them trucks, projected to reach 707 by 2046. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTR 108
CrossesStream
Location2.25 MI S of Tuscola
RouteCounty Highway 0
CountyDouglas County
StateIllinois
Coordinates39.76749, -88.28329
Functional classRural Minor 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length29 ft (8.8 m)
Longest span9 ft (2.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2022)
Projected traffic707 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR 108 over Stream built?

It was built in 1938, making it 87 years old in 2025.

What condition is TR 108 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 January 2025.

How much traffic does TR 108 over Stream carry?

About 550 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is TR 108 over Stream?

The structure is 29 ft (8.8 m) long with a longest span of 9 ft (2.6 m) and a deck 28 ft wide.

Who owns TR 108 over Stream?

It is owned by the Town or Township Highway Agency.