US Bridges

N Loran Route over Br. E. Fk. Plum Riv

Good

Carroll County, Illinois · 6 MI NE Mt Carroll · Structure no. 008320200000000

Built
1955
70 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
200
2024 count
Owner
County
County Highway Agency

About this bridge

N Loran Route over Br. E. Fk. Plum Riv is a concrete culvert carrying N Loran Route over Br. E. Fk. Plum Riv in Carroll County, Illinois. It was built in 1955, so it is 70 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 200 vehicles a day, roughly 7% of them trucks, projected to reach 202 by 2046. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 26.1 mi (42 km).

CarriesN Loran Route
CrossesBr. E. Fk. Plum Riv
Location6 MI NE Mt Carroll
RouteCounty Highway 0
Coordinates42.17993, -89.91997
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic202 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Loran Route over Br. E. Fk. Plum Riv built?

It was built in 1955, making it 70 years old in 2025.

What condition is N Loran Route over Br. E. Fk. Plum Riv 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 June 2024.

How much traffic does N Loran Route over Br. E. Fk. Plum Riv carry?

About 200 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is N Loran Route over Br. E. Fk. Plum Riv?

The structure is 26 ft (7.9 m) long with a longest span of 13 ft (3.9 m).

Who owns N Loran Route over Br. E. Fk. Plum Riv?

It is owned by the County Highway Agency.