US Bridges

TR-117 over Otter Pond Ditch

Fair

Lawrence County, Illinois · 1 MI NW Lawville Apt · Structure no. 051326200000000

Built
1994
31 years old
Condition
Fair
inspected December 2024
Type
Channel Beam
Concrete
Length
74 ft
3 main spans
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-117 over Otter Pond Ditch is a concrete channel beam carrying TR-117 over Otter Pond Ditch in Lawrence County, Illinois. It was built in 1994, so it is 31 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 51 by 2046. The structure is 74 ft (22.7 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR-117
CrossesOtter Pond Ditch
Location1 MI NW Lawville Apt
RouteCounty Highway 0
CountyLawrence County
StateIllinois
Coordinates38.77741, -87.64488
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic51 by 2046
Trucks10%
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-117 over Otter Pond Ditch built?

It was built in 1994, making it 31 years old in 2025.

What condition is TR-117 over Otter Pond Ditch 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 December 2024.

How much traffic does TR-117 over Otter Pond Ditch carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is TR-117 over Otter Pond Ditch?

The structure is 74 ft (22.7 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns TR-117 over Otter Pond Ditch?

It is owned by the Town or Township Highway Agency.