US Bridges

TR 175 over Smith Ditch

Good

Bureau County, Illinois · 4 MI SW Manlius · Structure no. 006421900000000

Built
2014
11 years old
Condition
Good
inspected November 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
125
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 175 over Smith Ditch is a prestressed concrete box beam or girders - multiple carrying TR 175 over Smith Ditch in Bureau County, Illinois. It was built in 2014, so it is 11 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 125 vehicles a day, roughly 31% of them trucks, projected to reach 126 by 2046. The structure is 53 ft (16.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR 175
CrossesSmith Ditch
Location4 MI SW Manlius
RouteCounty Highway 0
CountyBureau County
StateIllinois
Coordinates41.43074, -89.73687
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length53 ft (16.1 m)
Longest span51 ft (15.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2020)
Projected traffic126 by 2046
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 175 over Smith Ditch built?

It was built in 2014, making it 11 years old in 2025.

What condition is TR 175 over Smith Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2021.

How much traffic does TR 175 over Smith Ditch carry?

About 125 vehicles per day (2020 count), of which roughly 31% are trucks.

How long is TR 175 over Smith Ditch?

The structure is 53 ft (16.1 m) long with a longest span of 51 ft (15.4 m) and a deck 24 ft wide.

Who owns TR 175 over Smith Ditch?

It is owned by the Town or Township Highway Agency.