US Bridges

Mulford Road over Keith Creek

Fair

Winnebago County, Illinois · 0.5 MI N Guilford RD · Structure no. 101504600000000

Built
1961
64 years old, rebuilt 1979
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
8,700
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mulford Road over Keith Creek is a concrete continuous culvert carrying Mulford Road over Keith Creek in Winnebago County, Illinois. It was built in 1961 and reconstructed in 1979, so it is 64 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 8,700 vehicles a day, roughly 2% of them trucks, projected to reach 11,918 by 2046. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMulford Road
CrossesKeith Creek
Location0.5 MI N Guilford RD
CountyWinnebago County
StateIllinois
Coordinates42.29069, -88.99961
Functional classUrban Other Principal 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 rating72.9 US tons
Inventory rating43.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2022)
Projected traffic11,918 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 Mulford Road over Keith Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1979.

What condition is Mulford Road over Keith Creek 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 August 2023.

How much traffic does Mulford Road over Keith Creek carry?

About 8,700 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Mulford Road over Keith Creek?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m).

Who owns Mulford Road over Keith Creek?

It is owned by the City or Municipal Highway Agency.