US Bridges

TR 73(W Stringtown over Stream

Fair

Macon County, Illinois · 3.25 MI NW Niantic · Structure no. 058501200000000

Built
1963
62 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
25
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 73(W Stringtown over Stream is a concrete continuous culvert carrying TR 73(W Stringtown over Stream in Macon County, Illinois. It was built in 1963, so it is 62 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 25 vehicles a day, roughly 8% of them trucks, projected to reach 25 by 2046. The structure is 32 ft (9.7 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 73(W Stringtown
CrossesStream
Location3.25 MI NW Niantic
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.88797, -89.20869
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length32 ft (9.7 m)
Longest span15 ft (4.7 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic25 by 2046
Trucks8%
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

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 73(W Stringtown over Stream built?

It was built in 1963, making it 62 years old in 2025.

What condition is TR 73(W Stringtown 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 February 2024.

How much traffic does TR 73(W Stringtown over Stream carry?

About 25 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is TR 73(W Stringtown over Stream?

The structure is 32 ft (9.7 m) long with a longest span of 15 ft (4.7 m) and a deck 22 ft wide.

Who owns TR 73(W Stringtown over Stream?

It is owned by the Town or Township Highway Agency.