US Bridges

Morgan ST over Rock River

Fair

Winnebago County, Illinois · 0.3 Mile E of Il 2 · Structure no. 101610800000000

Built
2013
12 years old
Condition
Fair
inspected July 2023
Type
Arch - Thru
Steel
Length
503 ft
1 main span
Daily traffic
7,600
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Morgan ST over Rock River is a steel arch - thru carrying Morgan ST over Rock River in Winnebago County, Illinois. It was built in 2013, so it is 12 years old, younger 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 7,600 vehicles a day, roughly 5% of them trucks, projected to reach 8,434 by 2046. The structure is 503 ft (153.3 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMorgan ST
CrossesRock River
Location0.3 Mile E of Il 2
CountyWinnebago County
StateIllinois
Coordinates42.26149, -89.09457
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length503 ft (153.3 m)
Longest span370 ft (112.7 m)
Deck width73 ft (22.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2022)
Projected traffic8,434 by 2046
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Morgan ST over Rock River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Morgan ST over Rock River 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 July 2023.

How much traffic does Morgan ST over Rock River carry?

About 7,600 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Morgan ST over Rock River?

The structure is 503 ft (153.3 m) long with a longest span of 370 ft (112.7 m) and a deck 73 ft wide.

Who owns Morgan ST over Rock River?

It is owned by the City or Municipal Highway Agency.