US Bridges

N Loran Route over E Fork Plum River

Good

Carroll County, Illinois · 4 MI NE Mt Carroll · Structure no. 008321000000000

Built
1954
71 years old, rebuilt 2001
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
196 ft
3 main spans
Daily traffic
200
2024 count
Owner
County
County Highway Agency

About this bridge

N Loran Route over E Fork Plum River is a steel continuous stringer/multi-beam or girder carrying N Loran Route over E Fork Plum River in Carroll County, Illinois. It was built in 1954 and reconstructed in 2001, so it is 71 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 196 ft (59.6 m) long and 30 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesN Loran Route
CrossesE Fork Plum River
Location4 MI NE Mt Carroll
RouteCounty Highway 0
Coordinates42.1677, -89.93821
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
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

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length196 ft (59.6 m)
Longest span75 ft (22.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$432,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Loran Route over E Fork Plum River built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2001.

What condition is N Loran Route over E Fork Plum River 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 May 2024.

How much traffic does N Loran Route over E Fork Plum River carry?

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

How long is N Loran Route over E Fork Plum River?

The structure is 196 ft (59.6 m) long with a longest span of 75 ft (22.9 m) and a deck 30 ft wide.

Who owns N Loran Route over E Fork Plum River?

It is owned by the County Highway Agency.