US Bridges

Keim Bridge/ TR 20 over Lively Branch

Good

St. Clair County, Illinois · 1 M S Ill 156 · Structure no. 082409600000000

Built
1977
48 years old
Condition
Good
inspected February 2023
Type
Channel Beam
Concrete
Length
100 ft
3 main spans
Daily traffic
375
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Keim Bridge/ TR 20 over Lively Branch is a concrete channel beam carrying Keim Bridge/ TR 20 over Lively Branch in St. Clair County, Illinois. It was built in 1977, so it is 48 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 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 375 vehicles a day, roughly 9% of them trucks, projected to reach 429 by 2046. The structure is 100 ft (30.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKeim Bridge/ TR 20
CrossesLively Branch
Location1 M S Ill 156
RouteCounty Highway 0
CountySt. Clair County
StateIllinois
Coordinates38.3059, -89.88059
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum 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 spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span38 ft (11.6 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2023)
Projected traffic429 by 2046
Trucks9%
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 Keim Bridge/ TR 20 over Lively Branch built?

It was built in 1977, making it 48 years old in 2025.

What condition is Keim Bridge/ TR 20 over Lively Branch 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 February 2023.

How much traffic does Keim Bridge/ TR 20 over Lively Branch carry?

About 375 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Keim Bridge/ TR 20 over Lively Branch?

The structure is 100 ft (30.5 m) long with a longest span of 38 ft (11.6 m) and a deck 30 ft wide.

Who owns Keim Bridge/ TR 20 over Lively Branch?

It is owned by the Town or Township Highway Agency.