US Bridges

TR 118 over Rock Crk.

PoorPosted for load

Adams County, Illinois · 3.2 MI SE Ursa · Structure no. 001309600000000

Built
1933
92 years old
Condition
Poor
inspected March 2024
Type
Other
Concrete
Length
33 ft
1 main span
Daily traffic
125
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 118 over Rock Crk. is a concrete other carrying TR 118 over Rock Crk. in Adams County, Illinois. It was built in 1933, so it is 92 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 125 vehicles a day, roughly 12% of them trucks, projected to reach 126 by 2046. The structure is 33 ft (10.1 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 118
CrossesRock Crk.
Location3.2 MI SE Ursa
RouteCounty Highway 0
CountyAdams County
StateIllinois
Coordinates40.02992, -91.31951
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating13.2 US tons

Structure

Structure typeOther
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2024)
Projected traffic126 by 2046
Trucks12%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 118 over Rock Crk. built?

It was built in 1933, making it 92 years old in 2025.

What condition is TR 118 over Rock Crk. in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does TR 118 over Rock Crk. carry?

About 125 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is TR 118 over Rock Crk.?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns TR 118 over Rock Crk.?

It is owned by the Town or Township Highway Agency.