US Bridges

TR 474A over Shaws Pt Br

Fair

Macoupin County, Illinois · 5.5 E Carlinville · Structure no. 059321500000000

Built
1900
125 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
75
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 474A over Shaws Pt Br is a steel stringer/multi-beam or girder carrying TR 474A over Shaws Pt Br 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 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 75 vehicles a day, roughly 67% of them trucks, projected to reach 76 by 2046. The structure is 24 ft (7.3 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 474A
CrossesShaws Pt Br
Location5.5 E Carlinville
RouteCounty Highway 0
CountyMacoupin County
StateIllinois
Coordinates39.28324, -89.76931
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic76 by 2046
Trucks67%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$45,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 474A over Shaws Pt Br built?

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

What condition is TR 474A over Shaws Pt Br 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 March 2023.

How much traffic does TR 474A over Shaws Pt Br carry?

About 75 vehicles per day (2021 count), of which roughly 67% are trucks.

How long is TR 474A over Shaws Pt Br?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 18 ft wide.

Who owns TR 474A over Shaws Pt Br?

It is owned by the Town or Township Highway Agency.