US Bridges

TR 546 over Br Sangamon River

Fair

McLean County, Illinois · 2.0 MI SE Arrowsmith · Structure no. 057329900000000

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
75
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 546 over Br Sangamon River is a concrete continuous culvert carrying TR 546 over Br Sangamon River in McLean County, Illinois. It was built in 1969, so it is 56 years old, older 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, roughly 3% of them trucks, projected to reach 76 by 2046. The structure is 29 ft (8.7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 546
CrossesBr Sangamon River
Location2.0 MI SE Arrowsmith
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.43473, -88.59343
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length29 ft (8.7 m)
Longest span13 ft (4.1 m)
Deck width28 ft (8.4 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic76 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 546 over Br Sangamon River built?

It was built in 1969, making it 56 years old in 2025.

What condition is TR 546 over Br Sangamon River 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 October 2024.

How much traffic does TR 546 over Br Sangamon River carry?

About 75 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is TR 546 over Br Sangamon River?

The structure is 29 ft (8.7 m) long with a longest span of 13 ft (4.1 m) and a deck 28 ft wide.

Who owns TR 546 over Br Sangamon River?

It is owned by the Town or Township Highway Agency.