US Bridges

TR 165 over Eliza Lake Ditch

Good

Mercer County, Illinois · 2 MI N of New Boston · Structure no. 066507000000000

Built
2015
10 years old, rebuilt 2016
Condition
Good
inspected June 2024
Type
Other
Steel
Length
78 ft
1 main span
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 165 over Eliza Lake Ditch is a steel other carrying TR 165 over Eliza Lake Ditch in Mercer County, Illinois. It was built in 2015 and reconstructed in 2016, so it is 10 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 50 vehicles a day, projected to reach 51 by 2046. The structure is 78 ft (23.8 m) long and 20 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesTR 165
CrossesEliza Lake Ditch
Location2 MI N of New Boston
RouteCounty Highway 0
Coordinates41.20308, -91.0203
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 protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeOther
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span75 ft (22.9 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic51 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 165 over Eliza Lake Ditch built?

It was built in 2015, making it 10 years old in 2025. It was reconstructed in 2016.

What condition is TR 165 over Eliza Lake 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 June 2024.

How much traffic does TR 165 over Eliza Lake Ditch carry?

About 50 vehicles per day (2024 count).

How long is TR 165 over Eliza Lake Ditch?

The structure is 78 ft (23.8 m) long with a longest span of 75 ft (22.9 m) and a deck 20 ft wide.

Who owns TR 165 over Eliza Lake Ditch?

It is owned by the Town or Township Highway Agency.