Summit County, CO
57 public highway bridges
Summit County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Summit County, Colorado contains 57 public highway bridges. Roughly 22.8% are rated “Good,” 57.9% “Fair,” and 5.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (57)
SH 91 ML
UnknownOver: I 70 ML
AT COPPER MOUNTAIN, Summit, CO
SHRINE PASS ROAD
UnknownOver: I 70 ML
0.1 MI E OF EAGLE SUMMIT, Summit, CO
I 70 ML WBND
UnknownOver: FARM ACCESS ROAD
1.6 MI E OF JCT SH 6, Summit, CO
I70 ML WBND
UnknownOver: SH 9 ML
AT SILVERTHORNE, Summit, CO
I 70 ML EBND
UnknownOver: US 6 ML
AT SILVERTHORNE, Summit, CO
SH 9 ML
UnknownOver: I 70 ML
AT FRISCO, Summit, CO
I 70 ML EBND
UnknownOver: BlueRvr-Adams Ave and...
10.5 MI E OF JCT SH 91, Summit, CO
SH 91 ML
UnknownOver: CLIMAX MINE HAUL ROAD
.1 MI N LAKE/SUMMIT CO LI, Summit, CO
SLATE CREEK RD
FairOver: BLUE RIVER
0.4 MI WEST OF HIGHWAY 9, Summit, CO
I 70 ML EBND
FairOver: WILDER GULCH
1 MI E OF EAGLE SUMMIT CL, Summit, CO
FRENCH STREET
FairOver: BLUE RIVER
JUST WEST OF MAIN ST, Summit, CO
E. KEYSTONE RD.
FairOver: SNAKE RIVER
.2 MI W OF MONTEZUMA RD, Summit, CO
County Road 1813
FairOver: Blue River
26 mi NW of Silverthorne, Summit, CO
HAMILTON CREEK RD
FairOver: BLUE RIVER
.4 MILE EAST OF HIGHWAY 9, Summit, CO
I 70 ML EBND
FairOver: STAFFORD GULCH
2.5 MI E OF EAGLE SUMMIT, Summit, CO
I 70 ML EBND
FairOver: WEST TEN MILE CREEK
@ COPPER MOUNTAIN, Summit, CO
BALD EAGLE ROAD
FairOver: BLUE RIVER
0.2 MI EAST OF HIGHWAY 9, Summit, CO
SH 9 ML
FairOver: BLUE RIVER
13.5 MI NO OF JCT I 70, Summit, CO
I 70 ML WBND
FairOver: BlueRvr-Adams Ave and...
IN SILVERTHORNE, Summit, CO
SH 9 ML
FairOver: BLUE RIVER
16.8 MI NO OF JCT I 70, Summit, CO
I 70 ML WBND
FairOver: FRISCO MAIN STREET
SW END OF FRISCO, Summit, CO
I 70 ML EBND
FairOver: FRISCO MAIN STREET
SW END OF FRISCO, Summit, CO
Heeney Road
FairOver: Green Mtn Dam Spillway
26 mi N of Silverthorne, Summit, CO
MAIN STREET
FairOver: TEN MILE CREEK
0.1 MI E OF I-70, Summit, CO
WEST KEYSTONE RD.
FairOver: SNAKE RIVER
0.3 MI S OF HIGHWAY 9, Summit, CO
BOULDER CREEK RD
FairOver: BOULDER CREEK
0.1 MI W OF STATE HWY 9, Summit, CO
ADAMS AVENUE
FairOver: BLUE RIVER
0.1 MI WEST OF MAIN ST, Summit, CO
SH 9 ML
FairOver: BLUE RIVER
IN SILVERTHORNE, Summit, CO
CREEKSIDE DRIVE
FairOver: TEN MILE CREEK
0.1 MI N OF MAIN STREET, Summit, CO
MADISON AVE
FairOver: TEN MILE CREEK
0.1 MI N OF MAIN STREET, Summit, CO
4TH AVE-CREEKSIDE
FairOver: TEN MILE CREEK
0.2 MI N OF MAIN STREET, Summit, CO
STEPHENS STREET
FairOver: STRAIGHT CREEK
NEAR FACTORY OUTLET, Summit, CO
BROKEN LANCE DR
FairOver: BLUE RIVER
0.5 MI SW OF HIGHWAY 9, Summit, CO
MONTEZUMA RD CR5
FairOver: SNAKE RIVER
1 MI NORTH OF MONTEZUMA, Summit, CO
PARK AVENUE
FairOver: BLUE RIVER
JUST WEST OF SH 9, Summit, CO
I 70 ML EBND
FairOver: FARM ACCESS ROAD
1.6 MI E OF JCT US 6 + SH, Summit, CO
WILDERNEST ROAD
FairOver: BLUE RIVER
.1 MI W OF STATE HWY 9, Summit, CO
SWAN MOUNTAIN RD
FairOver: BLUE RIVER
.2 MILE EAST OF HIGHWAY 9, Summit, CO
SH 9 ML
FairOver: TENMILE CREEK
IN FRISCO, Summit, CO
US 6 ML
FairOver: SNAKE RIVER
5 MI S OF DILLON, Summit, CO
SH 9 ML
FairOver: BLUE RIVER
0.8 MI S. OF BRECKINGRIDG, Summit, CO
SH 9 ML
GoodOver: BLUE RIVER
11.5 MI NO OF JCT I70, Summit, CO
SH 9 ML
GoodOver: BLUE RIVER
4.1 MI NO OF BRECKENRIDGE, Summit, CO
SH 9 ML
GoodOver: BLUE RIVER
SH 9 OVER BLUE RIVER, Summit, CO
US 6 ML
GoodOver: MONTEZUMA ROAD WBND
AT MONTEZUMA ROAD, Summit, CO
FSR 355.1
GoodOver: SOUTH FORK SWAN
INTERSECTION OF 355.1B, Summit, CO
REVETT DRIVE
GoodOver: SWAN RIVER
0.1 MI N OF TIGER RD, Summit, CO
SH 9 ML
GoodOver: PEDESTRIAN UNDERPASS
200 FT S of Peak One Blvd, Summit, CO
I 70 EBND
GoodOver: FOREST SERVICE ROAD
2.6 MI W OF EISENHWR TUNL, Summit, CO
I 70 WBND
GoodOver: FOREST SERVICE ROAD
2.6 MI W OF EISENHWR TUNL, Summit, CO
Read our methodology - how this data is sourced, computed, and verified.
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Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.