US Bridges

TR 149A over Unnamed Stream

Good

Gallatin County, Illinois · NE Corp Limit Stown · Structure no. 030307000000000

Built
1980
45 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
225
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 149A over Unnamed Stream is a prestressed concrete box beam or girders - multiple carrying TR 149A over Unnamed Stream in Gallatin County, Illinois. It was built in 1980, so it is 45 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 225 vehicles a day, roughly 58% of them trucks, projected to reach 278 by 2046. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 149A
CrossesUnnamed Stream
LocationNE Corp Limit Stown
RouteCounty Highway 0
CountyGallatin County
StateIllinois
Coordinates37.72178, -88.17523
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating43.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span57 ft (17.5 m)
Deck width30 ft (9.1 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic278 by 2046
Trucks58%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 149A over Unnamed Stream built?

It was built in 1980, making it 45 years old in 2025.

What condition is TR 149A over Unnamed Stream 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 July 2023.

How much traffic does TR 149A over Unnamed Stream carry?

About 225 vehicles per day (2023 count), of which roughly 58% are trucks.

How long is TR 149A over Unnamed Stream?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.5 m) and a deck 30 ft wide.

Who owns TR 149A over Unnamed Stream?

It is owned by the Town or Township Highway Agency.