US Bridges

TR 55B over Martinton Ditch NO3

Good

Iroquois County, Illinois · 1.25 MI E Martinton · Structure no. 038455800000000

Built
2013
12 years old
Condition
Good
inspected April 2023
Type
Slab
Steel Continuous
Length
147 ft
3 main spans
Daily traffic
125
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 55B over Martinton Ditch NO3 is a steel continuous slab carrying TR 55B over Martinton Ditch NO3 in Iroquois County, Illinois. It was built in 2013, so it is 12 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 125 vehicles a day, roughly 17% of them trucks, projected to reach 303 by 2046. The structure is 147 ft (44.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 55B
CrossesMartinton Ditch NO3
Location1.25 MI E Martinton
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.91972, -87.69693
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length147 ft (44.8 m)
Longest span61 ft (18.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic303 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 NO3 built?

It was built in 2013, making it 12 years old in 2025.

What condition is TR 55B over Martinton Ditch NO3 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 April 2023.

How much traffic does TR 55B over Martinton Ditch NO3 carry?

About 125 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is TR 55B over Martinton Ditch NO3?

The structure is 147 ft (44.8 m) long with a longest span of 61 ft (18.6 m) and a deck 30 ft wide.

Who owns TR 55B over Martinton Ditch NO3?

It is owned by the Town or Township Highway Agency.