US Bridges

MS-6090 (curtiss S over B&n RR

PoorPosted for load

Morgan County, Illinois · 0.35MI N of Il 104 · Structure no. 069990900000000

Built
1901
124 years old
Condition
Poor
inspected July 2023
Type
Other
Steel
Length
99 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

MS-6090 (curtiss S over B&n RR is a steel other carrying MS-6090 (curtiss S over B&n RR in Morgan County, Illinois. It was built in 1901, so it is 124 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 40% of them trucks, projected to reach 51 by 2046. The structure is 99 ft (30.2 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMS-6090 (curtiss S
CrossesB&n RR
Location0.35MI N of Il 104
RouteCity Street 0
CountyMorgan County
StateIllinois
Coordinates39.59571, -89.94558
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating11 US tons
Inventory rating7.8 US tons

Structure

Structure typeOther
MaterialSteel
DeckWood or timber
Main spans2 (+2 approach)
Design loadH 15
Structure length99 ft (30.2 m)
Longest span33 ft (10.1 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic51 by 2046
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$276,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was MS-6090 (curtiss S over B&n RR built?

It was built in 1901, making it 124 years old in 2025.

What condition is MS-6090 (curtiss S over B&n RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does MS-6090 (curtiss S over B&n RR carry?

About 20 vehicles per day (2024 count), of which roughly 40% are trucks.

How long is MS-6090 (curtiss S over B&n RR?

The structure is 99 ft (30.2 m) long with a longest span of 33 ft (10.1 m) and a deck 20 ft wide.

Who owns MS-6090 (curtiss S over B&n RR?

It is owned by the County Highway Agency.