US Bridges

Taylor Highway over Forty Mile River

Good

Southeast Fairbanks Census Area, Alaska · Mile Point 111.0 · Structure no. 0297

Built
1974
51 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
558 ft
3 main spans
Daily traffic
20
2020 count
Owner
State
State Highway Agency

About this bridge

Taylor Highway over Forty Mile River is a steel continuous box beam or girders - multiple carrying Taylor Highway over Forty Mile River in Southeast Fairbanks Census Area, Alaska. It was built in 1974, so it is 51 years old, older than the Alaska average of 35.9 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 20 vehicles a day, roughly 28% of them trucks, projected to reach 30 by 2039. The structure is 558 ft (170 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesTaylor Highway
CrossesForty Mile River
LocationMile Point 111.0
RouteState Highway 786
StateAlaska
Coordinates64.30889, -141.40889
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.5 US tons
Inventory rating35.5 US tons

Structure

MaterialSteel Continuous
DeckWood or timber
Main spans3
Design loadHS 20 + Mod
Structure length558 ft (170 m)
Longest span220 ft (67.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic30 by 2039
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Taylor Highway over Forty Mile River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Taylor Highway over Forty Mile 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 July 2023.

How much traffic does Taylor Highway over Forty Mile River carry?

About 20 vehicles per day (2020 count), of which roughly 28% are trucks.

How long is Taylor Highway over Forty Mile River?

The structure is 558 ft (170 m) long with a longest span of 220 ft (67.1 m) and a deck 31 ft wide.

Who owns Taylor Highway over Forty Mile River?

It is owned by the State Highway Agency.