US Bridges

Ill 13 over Mid Fork Saline Riv.

Poor

Saline County, Illinois · 1.6 MI E Harrisburg · Structure no. 083004500000000

Built
1972
53 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
253 ft
3 main spans
Daily traffic
3,350
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 13 over Mid Fork Saline Riv. is a steel continuous stringer/multi-beam or girder carrying Ill 13 over Mid Fork Saline Riv. in Saline County, Illinois. It was built in 1972, so it is 53 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,350 vehicles a day, roughly 11% of them trucks, projected to reach 3,283 by 2046. The structure is 253 ft (77.1 m) long and 46 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesIll 13
CrossesMid Fork Saline Riv.
Location1.6 MI E Harrisburg
RouteState Highway 13
CountySaline County
StateIllinois
Coordinates37.73811, -88.50182
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length253 ft (77.1 m)
Longest span96 ft (29.4 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,350 (2023)
Projected traffic3,283 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ill 13 over Mid Fork Saline Riv. built?

It was built in 1972, making it 53 years old in 2025.

What condition is Ill 13 over Mid Fork Saline Riv. in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Ill 13 over Mid Fork Saline Riv. carry?

About 3,350 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill 13 over Mid Fork Saline Riv.?

The structure is 253 ft (77.1 m) long with a longest span of 96 ft (29.4 m) and a deck 46 ft wide.

Who owns Ill 13 over Mid Fork Saline Riv.?

It is owned by the State Highway Agency.