US Bridges

TR 55B over Martinton Ditch No 3

Fair

Iroquois County, Illinois · 0.1 MI E Martinton · Structure no. 038454800000000

Built
1981
44 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
150
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 55B over Martinton Ditch No 3 is a prestressed concrete box beam or girders - multiple carrying TR 55B over Martinton Ditch No 3 in Iroquois County, Illinois. It was built in 1981, so it is 44 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 5 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 150 vehicles a day, roughly 12% of them trucks, projected to reach 354 by 2046. The structure is 66 ft (20.1 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTR 55B
CrossesMartinton Ditch No 3
Location0.1 MI E Martinton
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.91934, -87.72003
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span64 ft (19.5 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic354 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 55B over Martinton Ditch No 3 built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR 55B over Martinton Ditch No 3 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 April 2023.

How much traffic does TR 55B over Martinton Ditch No 3 carry?

About 150 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is TR 55B over Martinton Ditch No 3?

The structure is 66 ft (20.1 m) long with a longest span of 64 ft (19.5 m) and a deck 30 ft wide.

Who owns TR 55B over Martinton Ditch No 3?

It is owned by the Town or Township Highway Agency.