US Bridges

TR 193A over Salt Creek Tributary

Fair

Mason County, Illinois · 5 MI SW Mason City · Structure no. 063480700000000

Built
2010
15 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
75
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 193A over Salt Creek Tributary is a prestressed concrete box beam or girders - multiple carrying TR 193A over Salt Creek Tributary in Mason County, Illinois. It was built in 2010, so it is 15 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 75 vehicles a day, projected to reach 76 by 2046. The structure is 77 ft (23.5 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTR 193A
CrossesSalt Creek Tributary
Location5 MI SW Mason City
RouteCounty Highway 0
Coordinates40.14582, -89.75934
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span74 ft (22.5 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic76 by 2046
Trucks0%
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 193A over Salt Creek Tributary built?

It was built in 2010, making it 15 years old in 2025.

What condition is TR 193A over Salt Creek Tributary 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 193A over Salt Creek Tributary carry?

About 75 vehicles per day (2024 count).

How long is TR 193A over Salt Creek Tributary?

The structure is 77 ft (23.5 m) long with a longest span of 74 ft (22.5 m) and a deck 27 ft wide.

Who owns TR 193A over Salt Creek Tributary?

It is owned by the Town or Township Highway Agency.