US Bridges

SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR

Fair

Boulder County, Colorado · 0.9 MI N of JCT US 36 · Structure no. E-16-HY

Built
1973
52 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
153 ft
2 main spans
Daily traffic
19,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR is a steel continuous stringer/multi-beam or girder carrying SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR in Boulder County, Colorado. It was built in 1973, so it is 52 years old, older than the Colorado average of 42.2 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 19,000 vehicles a day, roughly 4% of them trucks, projected to reach 20,330 by 2040. The structure is 153 ft (46.6 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 157 Ml Sbnd
CrossesS Bldr Rd-Tble Msa DR
Location0.9 MI N of JCT US 36
RouteState Highway 157A
Coordinates39.98693, -105.23201
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length153 ft (46.6 m)
Longest span78 ft (23.8 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2020)
Projected traffic20,330 by 2040
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR built?

It was built in 1973, making it 52 years old in 2025.

What condition is SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR 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 SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR carry?

About 19,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR?

The structure is 153 ft (46.6 m) long with a longest span of 78 ft (23.8 m) and a deck 45 ft wide.

Who owns SH 157 Ml Sbnd over S Bldr Rd-Tble Msa DR?

It is owned by the State Highway Agency.