US Bridges

Monroe ST over Jacksonville Branch

Fair

Sangamon County, Illinois · Chatham RD · Structure no. 084501800000000

Built
1976
49 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
4,450
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Monroe ST over Jacksonville Branch is a concrete continuous culvert carrying Monroe ST over Jacksonville Branch in Sangamon County, Illinois. It was built in 1976, so it is 49 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 6 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 4,450 vehicles a day, roughly 2% of them trucks, projected to reach 3,535 by 2046. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMonroe ST
CrossesJacksonville Branch
LocationChatham RD
CountySangamon County
StateIllinois
Coordinates39.79959, -89.68706
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,450 (2022)
Projected traffic3,535 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Monroe ST over Jacksonville Branch built?

It was built in 1976, making it 49 years old in 2025.

What condition is Monroe ST over Jacksonville Branch 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 April 2023.

How much traffic does Monroe ST over Jacksonville Branch carry?

About 4,450 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Monroe ST over Jacksonville Branch?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).

Who owns Monroe ST over Jacksonville Branch?

It is owned by the City or Municipal Highway Agency.