US Bridges

TR 312 Martie RD over Little Muddy Trib

Good

Jackson County, Illinois · 0.65 MI N of Ch 18 · Structure no. 039323000000000

Built
2003
22 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
75
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 312 Martie RD over Little Muddy Trib is a prestressed concrete box beam or girders - multiple carrying TR 312 Martie RD over Little Muddy Trib in Jackson County, Illinois. It was built in 2003, so it is 22 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, roughly 1% of them trucks, projected to reach 126 by 2046. The structure is 25 ft (7.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTR 312 Martie RD
CrossesLittle Muddy Trib
Location0.65 MI N of Ch 18
RouteCounty Highway 0
Coordinates37.87916, -89.24425
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
Deck8 Very GoodNo problems noted.
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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span23 ft (7.1 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic126 by 2046
Trucks1%
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 312 Martie RD over Little Muddy Trib built?

It was built in 2003, making it 22 years old in 2025.

What condition is TR 312 Martie RD over Little Muddy Trib 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 312 Martie RD over Little Muddy Trib carry?

About 75 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is TR 312 Martie RD over Little Muddy Trib?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7.1 m) and a deck 24 ft wide.

Who owns TR 312 Martie RD over Little Muddy Trib?

It is owned by the Town or Township Highway Agency.