US Bridges

TR 379 over Br. S. Edwards River

Good

Henry County, Illinois · 3.0 MI W Bishop Hill · Structure no. 037324100000000

Built
1978
47 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
75
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 379 over Br. S. Edwards River is a prestressed concrete box beam or girders - multiple carrying TR 379 over Br. S. Edwards River in Henry County, Illinois. It was built in 1978, so it is 47 years old, older 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 13% of them trucks, projected to reach 81 by 2046. The structure is 55 ft (16.8 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesTR 379
CrossesBr. S. Edwards River
Location3.0 MI W Bishop Hill
RouteCounty Highway 0
Coordinates41.19626, -90.18435
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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating64.3 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span52 ft (15.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic81 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 379 over Br. S. Edwards River built?

It was built in 1978, making it 47 years old in 2025.

What condition is TR 379 over Br. S. Edwards River 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 August 2023.

How much traffic does TR 379 over Br. S. Edwards River carry?

About 75 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is TR 379 over Br. S. Edwards River?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.8 m) and a deck 24 ft wide.

Who owns TR 379 over Br. S. Edwards River?

It is owned by the Town or Township Highway Agency.