US Bridges

TR 375 over Little Mill Creek

Good

Adams County, Illinois · 2.6 MI E Quincy · Structure no. 001340400000000

Built
1999
26 years old
Condition
Good
inspected March 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
500
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 375 over Little Mill Creek is a prestressed concrete box beam or girders - multiple carrying TR 375 over Little Mill Creek in Adams County, Illinois. It was built in 1999, so it is 26 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 500 vehicles a day, projected to reach 505 by 2046. The structure is 62 ft (18.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 375
CrossesLittle Mill Creek
Location2.6 MI E Quincy
RouteCounty Highway 0
Coordinates39.94201, -91.29105
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 inspectionMarch 2022
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length62 ft (18.8 m)
Longest span59 ft (18 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2024)
Projected traffic505 by 2046
Trucks0%
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 375 over Little Mill Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is TR 375 over Little Mill Creek 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 March 2022.

How much traffic does TR 375 over Little Mill Creek carry?

About 500 vehicles per day (2024 count).

How long is TR 375 over Little Mill Creek?

The structure is 62 ft (18.8 m) long with a longest span of 59 ft (18 m) and a deck 28 ft wide.

Who owns TR 375 over Little Mill Creek?

It is owned by the Town or Township Highway Agency.