US Bridges

Ch 34 over Solomon Crk.

PoorPosted for load

Macoupin County, Illinois · 3 SW of Hettick · Structure no. 059303700000000

Built
1900
125 years old
Condition
Poor
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
48 ft
3 main spans
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

Ch 34 over Solomon Crk. is a steel continuous stringer/multi-beam or girder carrying Ch 34 over Solomon Crk. in Macoupin County, Illinois. It was built in 1900, so it is 125 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 2 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 4% of them trucks, projected to reach 51 by 2046. The structure is 48 ft (14.6 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCh 34
CrossesSolomon Crk.
Location3 SW of Hettick
RouteCounty Highway 0
Coordinates39.31996, -90.08825
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.4 US tons
Inventory rating10 US tons

Structure

MaterialSteel Continuous
DeckWood or timber
Main spans3
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span30 ft (9.1 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic51 by 2046
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$78,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ch 34 over Solomon Crk. built?

It was built in 1900, making it 125 years old in 2025.

What condition is Ch 34 over Solomon Crk. 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 February 2023.

How much traffic does Ch 34 over Solomon Crk. carry?

About 50 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Ch 34 over Solomon Crk.?

The structure is 48 ft (14.6 m) long with a longest span of 30 ft (9.1 m) and a deck 18 ft wide.

Who owns Ch 34 over Solomon Crk.?

It is owned by the County Highway Agency.