US Bridges

TR 70 (TH-S28) over Strawn Creek

Good

Marshall County, Illinois · T29N-R2W-3PM Sec 4 · Structure no. 062484000000000

Built
1990
35 years old
Condition
Good
inspected April 2021
Type
Channel Beam
Concrete
Length
38 ft
1 main span
Daily traffic
25
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 70 (TH-S28) over Strawn Creek is a concrete channel beam carrying TR 70 (TH-S28) over Strawn Creek in Marshall County, Illinois. It was built in 1990, so it is 35 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 38 ft (11.7 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesTR 70 (TH-S28)
CrossesStrawn Creek
LocationT29N-R2W-3PM Sec 4
RouteCounty Highway 0
CountyMarshall County
StateIllinois
Coordinates41.00494, -89.35357
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length38 ft (11.7 m)
Longest span35 ft (10.6 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 70 (TH-S28) over Strawn Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is TR 70 (TH-S28) over Strawn Creek 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 April 2021.

How much traffic does TR 70 (TH-S28) over Strawn Creek carry?

About 25 vehicles per day (2024 count).

How long is TR 70 (TH-S28) over Strawn Creek?

The structure is 38 ft (11.7 m) long with a longest span of 35 ft (10.6 m) and a deck 26 ft wide.

Who owns TR 70 (TH-S28) over Strawn Creek?

It is owned by the Town or Township Highway Agency.